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RetroArch/gfx/drivers/gl.c
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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2016 - Daniel De Matteis
* Copyright (C) 2012-2015 - Michael Lelli
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef _MSC_VER
#pragma comment(lib, "opengl32")
#endif
#include <stdio.h>
#include <stdint.h>
#include <math.h>
#include <string.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <compat/strl.h>
#include <gfx/scaler/scaler.h>
#include <gfx/math/matrix_4x4.h>
#include <formats/image.h>
#include <retro_inline.h>
#include <retro_miscellaneous.h>
#include <string/stdstring.h>
#include <libretro.h>
#include "gl_capabilities.h"
#include "gl_renderchains/render_chain_gl.h"
#include "../../configuration.h"
#include "../../record/record_driver.h"
#include "../../performance_counters.h"
#include "../../retroarch.h"
#include "../../runloop.h"
#include "../../verbosity.h"
#include "../common/gl_common.h"
#ifdef HAVE_THREADS
#include "../video_thread_wrapper.h"
#endif
#include "../font_driver.h"
#include "../video_context_driver.h"
#include "../video_frame.h"
#ifdef HAVE_GLSL
#include "../drivers_shader/shader_glsl.h"
#endif
#ifdef GL_DEBUG
#include <lists/string_list.h>
#if defined(HAVE_OPENGLES2) || defined(HAVE_OPENGLES3) || defined(HAVE_OPENGLES_3_1) || defined(HAVE_OPENGLES_3_2)
#define HAVE_GL_DEBUG_ES
#endif
#endif
#ifdef HAVE_MENU
#include "../../menu/menu_driver.h"
#endif
#if defined(_WIN32) && !defined(_XBOX)
#include "../common/win32_common.h"
#endif
#include "../video_shader_driver.h"
#ifndef GL_SYNC_GPU_COMMANDS_COMPLETE
#define GL_SYNC_GPU_COMMANDS_COMPLETE 0x9117
#endif
#ifndef GL_SYNC_FLUSH_COMMANDS_BIT
#define GL_SYNC_FLUSH_COMMANDS_BIT 0x00000001
#endif
#ifdef IOS
/* There is no default frame buffer on iOS. */
void cocoagl_bind_game_view_fbo(void);
#define gl_bind_backbuffer() cocoagl_bind_game_view_fbo()
#else
#define gl_bind_backbuffer() glBindFramebuffer(RARCH_GL_FRAMEBUFFER, 0)
#endif
/* Used for the last pass when rendering to the back buffer. */
static const GLfloat vertexes_flipped[] = {
0, 1,
1, 1,
0, 0,
1, 0
};
/* Used when rendering to an FBO.
* Texture coords have to be aligned
* with vertex coordinates. */
static const GLfloat vertexes[] = {
0, 0,
1, 0,
0, 1,
1, 1
};
static const GLfloat tex_coords[] = {
0, 0,
1, 0,
0, 1,
1, 1
};
static const GLfloat white_color[] = {
1, 1, 1, 1,
1, 1, 1, 1,
1, 1, 1, 1,
1, 1, 1, 1,
};
static bool gl_shared_context_use = false;
void context_bind_hw_render(bool enable)
{
if (gl_shared_context_use)
video_context_driver_bind_hw_render(&enable);
}
#ifdef HAVE_OVERLAY
static void gl_free_overlay(gl_t *gl)
{
if (!gl)
return;
glDeleteTextures(gl->overlays, gl->overlay_tex);
free(gl->overlay_tex);
free(gl->overlay_vertex_coord);
free(gl->overlay_tex_coord);
free(gl->overlay_color_coord);
gl->overlay_tex = NULL;
gl->overlay_vertex_coord = NULL;
gl->overlay_tex_coord = NULL;
gl->overlay_color_coord = NULL;
gl->overlays = 0;
}
static void gl_overlay_vertex_geom(void *data,
unsigned image,
float x, float y,
float w, float h)
{
GLfloat *vertex = NULL;
gl_t *gl = (gl_t*)data;
if (!gl)
return;
if (image > gl->overlays)
{
RARCH_ERR("Invalid overlay id: %u\n", image);
return;
}
vertex = (GLfloat*)&gl->overlay_vertex_coord[image * 8];
/* Flipped, so we preserve top-down semantics. */
y = 1.0f - y;
h = -h;
vertex[0] = x;
vertex[1] = y;
vertex[2] = x + w;
vertex[3] = y;
vertex[4] = x;
vertex[5] = y + h;
vertex[6] = x + w;
vertex[7] = y + h;
}
static void gl_overlay_tex_geom(void *data,
unsigned image,
GLfloat x, GLfloat y,
GLfloat w, GLfloat h)
{
GLfloat *tex = NULL;
gl_t *gl = (gl_t*)data;
if (!gl)
return;
tex = (GLfloat*)&gl->overlay_tex_coord[image * 8];
tex[0] = x;
tex[1] = y;
tex[2] = x + w;
tex[3] = y;
tex[4] = x;
tex[5] = y + h;
tex[6] = x + w;
tex[7] = y + h;
}
static void gl_render_overlay(gl_t *gl)
{
video_shader_ctx_mvp_t mvp;
video_shader_ctx_coords_t coords;
video_shader_ctx_info_t shader_info;
unsigned i, width, height;
if (!gl || !gl->overlay_enable)
return;
video_driver_get_size(&width, &height);
glEnable(GL_BLEND);
if (gl->overlay_full_screen)
glViewport(0, 0, width, height);
/* Ensure that we reset the attrib array. */
shader_info.data = gl;
shader_info.idx = VIDEO_SHADER_STOCK_BLEND;
shader_info.set_active = true;
video_shader_driver_use(&shader_info);
gl->coords.vertex = gl->overlay_vertex_coord;
gl->coords.tex_coord = gl->overlay_tex_coord;
gl->coords.color = gl->overlay_color_coord;
gl->coords.vertices = 4 * gl->overlays;
coords.handle_data = NULL;
coords.data = &gl->coords;
video_shader_driver_set_coords(&coords);
mvp.data = gl;
mvp.matrix = &gl->mvp_no_rot;
video_shader_driver_set_mvp(&mvp);
for (i = 0; i < gl->overlays; i++)
{
glBindTexture(GL_TEXTURE_2D, gl->overlay_tex[i]);
glDrawArrays(GL_TRIANGLE_STRIP, 4 * i, 4);
}
glDisable(GL_BLEND);
gl->coords.vertex = gl->vertex_ptr;
gl->coords.tex_coord = gl->tex_info.coord;
gl->coords.color = gl->white_color_ptr;
gl->coords.vertices = 4;
if (gl->overlay_full_screen)
glViewport(gl->vp.x, gl->vp.y, gl->vp.width, gl->vp.height);
}
#endif
#define set_texture_coords(coords, xamt, yamt) \
coords[2] = xamt; \
coords[6] = xamt; \
coords[5] = yamt; \
coords[7] = yamt
static void gl_set_projection(gl_t *gl,
struct video_ortho *ortho, bool allow_rotate)
{
math_matrix_4x4 rot;
/* Calculate projection. */
matrix_4x4_ortho(&gl->mvp_no_rot, ortho->left, ortho->right,
ortho->bottom, ortho->top, ortho->znear, ortho->zfar);
if (!allow_rotate)
{
gl->mvp = gl->mvp_no_rot;
return;
}
matrix_4x4_rotate_z(&rot, M_PI * gl->rotation / 180.0f);
matrix_4x4_multiply(&gl->mvp, &rot, &gl->mvp_no_rot);
}
void gl_set_viewport(void *data, unsigned viewport_width,
unsigned viewport_height, bool force_full, bool allow_rotate)
{
gfx_ctx_aspect_t aspect_data;
unsigned width, height;
int x = 0;
int y = 0;
float device_aspect = (float)viewport_width / viewport_height;
struct video_ortho ortho = {0, 1, 0, 1, -1, 1};
settings_t *settings = config_get_ptr();
gl_t *gl = (gl_t*)data;
video_driver_get_size(&width, &height);
aspect_data.aspect = &device_aspect;
aspect_data.width = viewport_width;
aspect_data.height = viewport_height;
video_context_driver_translate_aspect(&aspect_data);
if (settings->video.scale_integer && !force_full)
{
video_viewport_get_scaled_integer(&gl->vp,
viewport_width, viewport_height,
video_driver_get_aspect_ratio(), gl->keep_aspect);
viewport_width = gl->vp.width;
viewport_height = gl->vp.height;
}
else if (gl->keep_aspect && !force_full)
{
float desired_aspect = video_driver_get_aspect_ratio();
#if defined(HAVE_MENU)
if (settings->video.aspect_ratio_idx == ASPECT_RATIO_CUSTOM)
{
const struct video_viewport *custom = video_viewport_get_custom();
/* GL has bottom-left origin viewport. */
x = custom->x;
y = height - custom->y - custom->height;
viewport_width = custom->width;
viewport_height = custom->height;
}
else
#endif
{
float delta;
if (fabsf(device_aspect - desired_aspect) < 0.0001f)
{
/* If the aspect ratios of screen and desired aspect
* ratio are sufficiently equal (floating point stuff),
* assume they are actually equal.
*/
}
else if (device_aspect > desired_aspect)
{
delta = (desired_aspect / device_aspect - 1.0f) / 2.0f + 0.5f;
x = (int)roundf(viewport_width * (0.5f - delta));
viewport_width = (unsigned)roundf(2.0f * viewport_width * delta);
}
else
{
delta = (device_aspect / desired_aspect - 1.0f) / 2.0f + 0.5f;
y = (int)roundf(viewport_height * (0.5f - delta));
viewport_height = (unsigned)roundf(2.0f * viewport_height * delta);
}
}
gl->vp.x = x;
gl->vp.y = y;
gl->vp.width = viewport_width;
gl->vp.height = viewport_height;
}
else
{
gl->vp.x = gl->vp.y = 0;
gl->vp.width = viewport_width;
gl->vp.height = viewport_height;
}
#if defined(RARCH_MOBILE)
/* In portrait mode, we want viewport to gravitate to top of screen. */
if (device_aspect < 1.0f)
gl->vp.y *= 2;
#endif
glViewport(gl->vp.x, gl->vp.y, gl->vp.width, gl->vp.height);
gl_set_projection(gl, &ortho, allow_rotate);
/* Set last backbuffer viewport. */
if (!force_full)
{
gl->vp_out_width = viewport_width;
gl->vp_out_height = viewport_height;
}
#if 0
RARCH_LOG("Setting viewport @ %ux%u\n", viewport_width, viewport_height);
#endif
}
/* Shaders */
static bool gl_shader_init(gl_t *gl)
{
video_shader_ctx_init_t init_data;
enum rarch_shader_type type;
settings_t *settings = config_get_ptr();
const char *shader_path = (settings->video.shader_enable
&& *settings->path.shader) ? settings->path.shader : NULL;
if (!gl)
{
RARCH_ERR("Invalid GL instance passed.\n");
return false;
}
type = video_shader_parse_type(shader_path,
gl_query_core_context_in_use()
? RARCH_SHADER_GLSL : DEFAULT_SHADER_TYPE);
switch (type)
{
#ifdef HAVE_CG
case RARCH_SHADER_CG:
if (gl_query_core_context_in_use())
shader_path = NULL;
break;
#endif
#ifdef HAVE_GLSL
case RARCH_SHADER_GLSL:
break;
#endif
default:
RARCH_ERR("[GL]: Not loading any shader, or couldn't find valid shader backend. Continuing without shaders.\n");
return true;
}
init_data.gl.core_context_enabled = gl_query_core_context_in_use();
init_data.shader_type = type;
init_data.shader = NULL;
init_data.data = gl;
init_data.path = shader_path;
if (video_shader_driver_init(&init_data))
return true;
RARCH_ERR("[GL]: Failed to initialize shader, falling back to stock.\n");
init_data.shader = NULL;
init_data.path = NULL;
return video_shader_driver_init(&init_data);
}
#ifndef NO_GL_FF_VERTEX
static void gl_disable_client_arrays(void)
{
if (gl_query_core_context_in_use())
return;
glClientActiveTexture(GL_TEXTURE1);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glClientActiveTexture(GL_TEXTURE0);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
#endif
GLenum min_filter_to_mag(GLenum type)
{
switch (type)
{
case GL_LINEAR_MIPMAP_LINEAR:
return GL_LINEAR;
case GL_NEAREST_MIPMAP_NEAREST:
return GL_NEAREST;
default:
break;
}
return type;
}
#ifdef HAVE_FBO
static uintptr_t gl_get_current_framebuffer(void *data)
{
gl_t *gl = (gl_t*)data;
return gl->hw_render_fbo[(gl->tex_index + 1) % gl->textures];
}
#endif
static void gl_set_rotation(void *data, unsigned rotation)
{
gl_t *gl = (gl_t*)data;
struct video_ortho ortho = {0, 1, 0, 1, -1, 1};
if (!gl)
return;
gl->rotation = 90 * rotation;
gl_set_projection(gl, &ortho, true);
}
static void gl_set_video_mode(void *data, unsigned width, unsigned height,
bool fullscreen)
{
gfx_ctx_mode_t mode;
mode.width = width;
mode.height = height;
mode.fullscreen = fullscreen;
video_context_driver_set_video_mode(&mode);
}
static void gl_update_input_size(gl_t *gl, unsigned width,
unsigned height, unsigned pitch, bool clear)
{
GLfloat xamt, yamt;
bool set_coords = false;
if ((width != gl->last_width[gl->tex_index] ||
height != gl->last_height[gl->tex_index]) && gl->empty_buf)
{
/* Resolution change. Need to clear out texture. */
gl->last_width[gl->tex_index] = width;
gl->last_height[gl->tex_index] = height;
if (clear)
{
glPixelStorei(GL_UNPACK_ALIGNMENT,
video_pixel_get_alignment(width * sizeof(uint32_t)));
#if defined(HAVE_PSGL)
glBufferSubData(GL_TEXTURE_REFERENCE_BUFFER_SCE,
gl->tex_w * gl->tex_h * gl->tex_index * gl->base_size,
gl->tex_w * gl->tex_h * gl->base_size,
gl->empty_buf);
#else
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, gl->tex_w, gl->tex_h, gl->texture_type,
gl->texture_fmt, gl->empty_buf);
#endif
}
set_coords = true;
}
else if ((width !=
gl->last_width[(gl->tex_index + gl->textures - 1) % gl->textures]) ||
(height !=
gl->last_height[(gl->tex_index + gl->textures - 1) % gl->textures]))
{
/* We might have used different texture coordinates
* last frame. Edge case if resolution changes very rapidly. */
set_coords = true;
}
if (!set_coords)
return;
xamt = (GLfloat)width / gl->tex_w;
yamt = (GLfloat)height / gl->tex_h;
set_texture_coords(gl->tex_info.coord, xamt, yamt);
}
static void gl_init_textures_data(gl_t *gl)
{
unsigned i;
for (i = 0; i < gl->textures; i++)
{
gl->last_width[i] = gl->tex_w;
gl->last_height[i] = gl->tex_h;
}
for (i = 0; i < gl->textures; i++)
{
gl->prev_info[i].tex = gl->texture[0];
gl->prev_info[i].input_size[0] = gl->tex_w;
gl->prev_info[i].tex_size[0] = gl->tex_w;
gl->prev_info[i].input_size[1] = gl->tex_h;
gl->prev_info[i].tex_size[1] = gl->tex_h;
memcpy(gl->prev_info[i].coord, tex_coords, sizeof(tex_coords));
}
}
static void gl_init_textures_reference(gl_t *gl, unsigned i,
GLenum internal_fmt, GLenum texture_fmt, GLenum texture_type)
{
glBindTexture(GL_TEXTURE_2D, gl->texture[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, gl->wrap_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, gl->wrap_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl->tex_mag_filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl->tex_min_filter);
#ifdef HAVE_PSGL
glTextureReferenceSCE(GL_TEXTURE_2D, 1,
gl->tex_w, gl->tex_h, 0,
internal_fmt,
gl->tex_w * gl->base_size,
gl->tex_w * gl->tex_h * i * gl->base_size);
#else
if (gl->egl_images)
return;
glTexImage2D(GL_TEXTURE_2D,
0, internal_fmt, gl->tex_w, gl->tex_h, 0, texture_type,
texture_fmt, gl->empty_buf ? gl->empty_buf : NULL);
#endif
}
static void gl_init_textures(gl_t *gl, const video_info_t *video)
{
unsigned i;
GLenum internal_fmt, texture_type = 0, texture_fmt = 0;
(void)texture_type;
(void)texture_fmt;
#if defined(HAVE_EGL) && defined(HAVE_OPENGLES)
/* Use regular textures if we use HW render. */
gl->egl_images = !gl->hw_render_use && gl_check_capability(GL_CAPS_EGLIMAGE) &&
video_context_driver_init_image_buffer((void*)video);
#endif
#ifdef HAVE_PSGL
if (!gl->pbo)
glGenBuffers(1, &gl->pbo);
glBindBuffer(GL_TEXTURE_REFERENCE_BUFFER_SCE, gl->pbo);
glBufferData(GL_TEXTURE_REFERENCE_BUFFER_SCE,
gl->tex_w * gl->tex_h * gl->base_size * gl->textures,
NULL, GL_STREAM_DRAW);
#endif
internal_fmt = gl->internal_fmt;
#ifndef HAVE_PSGL
texture_type = gl->texture_type;
texture_fmt = gl->texture_fmt;
#endif
#ifdef HAVE_OPENGLES2
/* GLES is picky about which format we use here.
* Without extensions, we can *only* render to 16-bit FBOs. */
if (gl->hw_render_use && gl->base_size == sizeof(uint32_t))
{
if (gl_check_capability(GL_CAPS_ARGB8))
{
internal_fmt = GL_RGBA;
texture_type = GL_RGBA;
texture_fmt = GL_UNSIGNED_BYTE;
}
else
{
RARCH_WARN("[GL]: 32-bit FBO not supported. Falling back to 16-bit.\n");
internal_fmt = GL_RGB;
texture_type = GL_RGB;
texture_fmt = GL_UNSIGNED_SHORT_5_6_5;
}
}
#endif
glGenTextures(gl->textures, gl->texture);
for (i = 0; i < gl->textures; i++)
gl_init_textures_reference(gl, i, internal_fmt,
texture_fmt, texture_type);
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
}
static INLINE void gl_copy_frame(gl_t *gl, const void *frame,
unsigned width, unsigned height, unsigned pitch)
{
static struct retro_perf_counter copy_frame = {0};
performance_counter_init(&copy_frame, "copy_frame");
performance_counter_start(&copy_frame);
#if defined(HAVE_PSGL)
{
unsigned h;
size_t buffer_addr = gl->tex_w * gl->tex_h *
gl->tex_index * gl->base_size;
size_t buffer_stride = gl->tex_w * gl->base_size;
const uint8_t *frame_copy = frame;
size_t frame_copy_size = width * gl->base_size;
uint8_t *buffer = (uint8_t*)glMapBuffer(
GL_TEXTURE_REFERENCE_BUFFER_SCE, GL_READ_WRITE) + buffer_addr;
for (h = 0; h < height; h++, buffer += buffer_stride, frame_copy += pitch)
memcpy(buffer, frame_copy, frame_copy_size);
glUnmapBuffer(GL_TEXTURE_REFERENCE_BUFFER_SCE);
}
#elif defined(HAVE_OPENGLES)
#if defined(HAVE_EGL)
if (gl->egl_images)
{
gfx_ctx_image_t img_info;
bool new_egl = false;
EGLImageKHR img = 0;
img_info.frame = frame;
img_info.width = width;
img_info.height = height;
img_info.pitch = pitch;
img_info.index = gl->tex_index;
img_info.rgb32 = (gl->base_size == 4);
img_info.handle = &img;
new_egl = video_context_driver_write_to_image_buffer(&img_info);
if (img == EGL_NO_IMAGE_KHR)
{
RARCH_ERR("[GL]: Failed to create EGL image.\n");
return;
}
if (new_egl)
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)img);
}
else
#endif
{
bool use_rgba = video_driver_supports_rgba();
glPixelStorei(GL_UNPACK_ALIGNMENT,
video_pixel_get_alignment(width * gl->base_size));
/* Fallback for GLES devices without GL_BGRA_EXT. */
if (gl->base_size == 4 && use_rgba)
{
video_frame_convert_argb8888_to_abgr8888(
&gl->scaler,
gl->conv_buffer,
frame, width, height, pitch);
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, width, height, gl->texture_type,
gl->texture_fmt, gl->conv_buffer);
}
else if (gl->support_unpack_row_length)
{
glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch / gl->base_size);
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, width, height, gl->texture_type,
gl->texture_fmt, frame);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
}
else
{
/* No GL_UNPACK_ROW_LENGTH. */
const GLvoid *data_buf = frame;
unsigned pitch_width = pitch / gl->base_size;
if (width != pitch_width)
{
/* Slow path - conv_buffer is preallocated
* just in case we hit this path. */
unsigned h;
const unsigned line_bytes = width * gl->base_size;
uint8_t *dst = (uint8_t*)gl->conv_buffer;
const uint8_t *src = (const uint8_t*)frame;
for (h = 0; h < height; h++, src += pitch, dst += line_bytes)
memcpy(dst, src, line_bytes);
data_buf = gl->conv_buffer;
}
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, width, height, gl->texture_type,
gl->texture_fmt, data_buf);
}
}
#else
{
const GLvoid *data_buf = frame;
glPixelStorei(GL_UNPACK_ALIGNMENT, video_pixel_get_alignment(pitch));
if (gl->base_size == 2 && !gl->have_es2_compat)
{
/* Convert to 32-bit textures on desktop GL.
*
* It is *much* faster (order of magnitude on my setup)
* to use a custom SIMD-optimized conversion routine
* than letting GL do it. */
video_frame_convert_rgb16_to_rgb32(
&gl->scaler,
gl->conv_buffer,
frame,
width,
height,
pitch);
data_buf = gl->conv_buffer;
}
else
glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch / gl->base_size);
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, width, height, gl->texture_type,
gl->texture_fmt, data_buf);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
}
#endif
performance_counter_stop(&copy_frame);
}
static INLINE void gl_set_shader_viewport(gl_t *gl, unsigned idx)
{
unsigned width, height;
video_shader_ctx_info_t shader_info;
video_driver_get_size(&width, &height);
shader_info.data = gl;
shader_info.idx = idx;
shader_info.set_active = true;
video_shader_driver_use(&shader_info);
gl_set_viewport(gl, width, height, false, true);
}
void gl_load_texture_data(
uint32_t id_data,
enum gfx_wrap_type wrap_type,
enum texture_filter_type filter_type,
unsigned alignment,
unsigned width, unsigned height,
const void *frame, unsigned base_size)
{
GLint mag_filter, min_filter;
bool want_mipmap = false;
bool use_rgba = video_driver_supports_rgba();
bool rgb32 = (base_size == (sizeof(uint32_t)));
GLenum wrap = gl_wrap_type_to_enum(wrap_type);
GLuint id = (GLuint)id_data;
glBindTexture(GL_TEXTURE_2D, id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrap);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrap);
if (!gl_check_capability(GL_CAPS_MIPMAP))
{
/* Assume no mipmapping support. */
switch (filter_type)
{
case TEXTURE_FILTER_MIPMAP_LINEAR:
filter_type = TEXTURE_FILTER_LINEAR;
break;
case TEXTURE_FILTER_MIPMAP_NEAREST:
filter_type = TEXTURE_FILTER_NEAREST;
break;
default:
break;
}
}
switch (filter_type)
{
case TEXTURE_FILTER_MIPMAP_LINEAR:
min_filter = GL_LINEAR_MIPMAP_NEAREST;
mag_filter = GL_LINEAR;
want_mipmap = true;
break;
case TEXTURE_FILTER_MIPMAP_NEAREST:
min_filter = GL_NEAREST_MIPMAP_NEAREST;
mag_filter = GL_NEAREST;
want_mipmap = true;
break;
case TEXTURE_FILTER_NEAREST:
min_filter = GL_NEAREST;
mag_filter = GL_NEAREST;
break;
case TEXTURE_FILTER_LINEAR:
default:
min_filter = GL_LINEAR;
mag_filter = GL_LINEAR;
break;
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter);
glPixelStorei(GL_UNPACK_ALIGNMENT, alignment);
glTexImage2D(GL_TEXTURE_2D,
0,
(use_rgba || !rgb32) ? GL_RGBA : RARCH_GL_INTERNAL_FORMAT32,
width, height, 0,
(use_rgba || !rgb32) ? GL_RGBA : RARCH_GL_TEXTURE_TYPE32,
(rgb32) ? RARCH_GL_FORMAT32 : GL_UNSIGNED_SHORT_4_4_4_4, frame);
if (want_mipmap && gl_check_capability(GL_CAPS_MIPMAP))
glGenerateMipmap(GL_TEXTURE_2D);
}
#if defined(HAVE_MENU)
static void gl_set_texture_frame(void *data,
const void *frame, bool rgb32, unsigned width, unsigned height,
float alpha)
{
enum texture_filter_type menu_filter;
settings_t *settings = config_get_ptr();
unsigned base_size = rgb32 ? sizeof(uint32_t) : sizeof(uint16_t);
gl_t *gl = (gl_t*)data;
if (!gl)
return;
context_bind_hw_render(false);
menu_filter = settings->menu.linear_filter ? TEXTURE_FILTER_LINEAR : TEXTURE_FILTER_NEAREST;
if (!gl->menu_texture)
glGenTextures(1, &gl->menu_texture);
gl_load_texture_data(gl->menu_texture,
RARCH_WRAP_EDGE, menu_filter,
video_pixel_get_alignment(width * base_size),
width, height, frame,
base_size);
gl->menu_texture_alpha = alpha;
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
context_bind_hw_render(true);
}
static void gl_set_texture_enable(void *data, bool state, bool full_screen)
{
gl_t *gl = (gl_t*)data;
if (!gl)
return;
gl->menu_texture_enable = state;
gl->menu_texture_full_screen = full_screen;
}
static void gl_set_osd_msg(void *data, const char *msg,
const struct font_params *params, void *font)
{
font_driver_render_msg(font, msg, params);
}
static void gl_show_mouse(void *data, bool state)
{
video_context_driver_show_mouse(&state);
}
static struct video_shader *gl_get_current_shader(void *data)
{
video_shader_ctx_t shader_info;
video_shader_driver_direct_get_current_shader(&shader_info);
return shader_info.data;
}
#if defined(HAVE_GL_ASYNC_READBACK)
static void gl_pbo_async_readback(gl_t *gl)
{
static struct retro_perf_counter async_readback = {0};
glBindBuffer(GL_PIXEL_PACK_BUFFER,
gl->pbo_readback[gl->pbo_readback_index++]);
gl->pbo_readback_index &= 3;
/* 4 frames back, we can readback. */
gl->pbo_readback_valid[gl->pbo_readback_index] = true;
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
glPixelStorei(GL_PACK_ALIGNMENT,
video_pixel_get_alignment(gl->vp.width * sizeof(uint32_t)));
/* Read asynchronously into PBO buffer. */
performance_counter_init(&async_readback, "async_readback");
performance_counter_start(&async_readback);
glReadBuffer(GL_BACK);
#ifdef HAVE_OPENGLES3
glReadPixels(gl->vp.x, gl->vp.y,
gl->vp.width, gl->vp.height,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
#else
glReadPixels(gl->vp.x, gl->vp.y,
gl->vp.width, gl->vp.height,
GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
#endif
performance_counter_stop(&async_readback);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
}
#endif
static INLINE void gl_draw_texture(gl_t *gl)
{
video_shader_ctx_mvp_t mvp;
video_shader_ctx_coords_t coords;
video_shader_ctx_info_t shader_info;
unsigned width, height;
GLfloat color[16];
color[ 0] = 1.0f;
color[ 1] = 1.0f;
color[ 2] = 1.0f;
color[ 3] = gl->menu_texture_alpha;
color[ 4] = 1.0f;
color[ 5] = 1.0f;
color[ 6] = 1.0f;
color[ 7] = gl->menu_texture_alpha;
color[ 8] = 1.0f;
color[ 9] = 1.0f;
color[10] = 1.0f;
color[11] = gl->menu_texture_alpha;
color[12] = 1.0f;
color[13] = 1.0f;
color[14] = 1.0f;
color[15] = gl->menu_texture_alpha;
if (!gl->menu_texture)
return;
video_driver_get_size(&width, &height);
gl->coords.vertex = vertexes_flipped;
gl->coords.tex_coord = tex_coords;
gl->coords.color = color;
glBindTexture(GL_TEXTURE_2D, gl->menu_texture);
shader_info.data = gl;
shader_info.idx = VIDEO_SHADER_STOCK_BLEND;
shader_info.set_active = true;
video_shader_driver_use(&shader_info);
gl->coords.vertices = 4;
coords.handle_data = NULL;
coords.data = &gl->coords;
video_shader_driver_set_coords(&coords);
mvp.data = gl;
mvp.matrix = &gl->mvp_no_rot;
video_shader_driver_set_mvp(&mvp);
glEnable(GL_BLEND);
if (gl->menu_texture_full_screen)
{
glViewport(0, 0, width, height);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glViewport(gl->vp.x, gl->vp.y, gl->vp.width, gl->vp.height);
}
else
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glDisable(GL_BLEND);
gl->coords.vertex = gl->vertex_ptr;
gl->coords.tex_coord = gl->tex_info.coord;
gl->coords.color = gl->white_color_ptr;
}
#endif
static bool gl_frame(void *data, const void *frame,
unsigned frame_width, unsigned frame_height,
uint64_t frame_count,
unsigned pitch, const char *msg)
{
video_shader_ctx_mvp_t mvp;
video_shader_ctx_coords_t coords;
video_shader_ctx_params_t params;
unsigned width, height;
struct video_tex_info feedback_info;
video_shader_ctx_info_t shader_info;
static struct retro_perf_counter frame_run = {0};
gl_t *gl = (gl_t*)data;
settings_t *settings = config_get_ptr();
performance_counter_init(&frame_run, "frame_run");
performance_counter_start(&frame_run);
if (!gl)
return false;
video_driver_get_size(&width, &height);
context_bind_hw_render(false);
#ifndef HAVE_OPENGLES
if (gl_query_core_context_in_use())
glBindVertexArray(gl->vao);
#endif
shader_info.data = gl;
shader_info.idx = 1;
shader_info.set_active = true;
video_shader_driver_use(&shader_info);
#ifdef IOS
/* Apparently the viewport is lost each frame, thanks Apple. */
gl_set_viewport(gl, width, height, false, true);
#endif
#ifdef HAVE_FBO
/* Render to texture in first pass. */
if (gl->fbo_inited)
{
gl_renderchain_recompute_pass_sizes(gl, frame_width, frame_height,
gl->vp_out_width, gl->vp_out_height);
gl_renderchain_start_render(gl);
}
#endif
if (gl->should_resize)
{
gfx_ctx_mode_t mode;
gl->should_resize = false;
mode.width = width;
mode.height = height;
video_context_driver_set_resize(&mode);
#ifdef HAVE_FBO
if (gl->fbo_inited)
{
gl_check_fbo_dimensions(gl);
/* Go back to what we're supposed to do,
* render to FBO #0. */
gl_renderchain_start_render(gl);
}
else
#endif
gl_set_viewport(gl, width, height, false, true);
}
if (frame)
gl->tex_index = ((gl->tex_index + 1) % gl->textures);
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
/* Can be NULL for frame dupe / NULL render. */
if (frame)
{
#ifdef HAVE_FBO
if (!gl->hw_render_fbo_init)
#endif
{
gl_update_input_size(gl, frame_width, frame_height, pitch, true);
gl_copy_frame(gl, frame, frame_width, frame_height, pitch);
}
/* No point regenerating mipmaps
* if there are no new frames. */
if (gl->tex_mipmap && gl_check_capability(GL_CAPS_MIPMAP))
glGenerateMipmap(GL_TEXTURE_2D);
}
/* Have to reset rendering state which libretro core
* could easily have overridden. */
#ifdef HAVE_FBO
if (gl->hw_render_fbo_init)
{
gl_update_input_size(gl, frame_width, frame_height, pitch, false);
if (!gl->fbo_inited)
{
gl_bind_backbuffer();
gl_set_viewport(gl, width, height, false, true);
}
#ifndef HAVE_OPENGLES
if (!gl_query_core_context_in_use())
glEnable(GL_TEXTURE_2D);
#endif
glDisable(GL_DEPTH_TEST);
glDisable(GL_STENCIL_TEST);
glDisable(GL_CULL_FACE);
glDisable(GL_DITHER);
glDisable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation(GL_FUNC_ADD);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
}
#endif
gl->tex_info.tex = gl->texture[gl->tex_index];
gl->tex_info.input_size[0] = frame_width;
gl->tex_info.input_size[1] = frame_height;
gl->tex_info.tex_size[0] = gl->tex_w;
gl->tex_info.tex_size[1] = gl->tex_h;
feedback_info = gl->tex_info;
#ifdef HAVE_FBO
if (gl->fbo_feedback_enable)
{
const struct video_fbo_rect *rect = &gl->fbo_rect[gl->fbo_feedback_pass];
GLfloat xamt = (GLfloat)rect->img_width / rect->width;
GLfloat yamt = (GLfloat)rect->img_height / rect->height;
feedback_info.tex = gl->fbo_feedback_texture;
feedback_info.input_size[0] = rect->img_width;
feedback_info.input_size[1] = rect->img_height;
feedback_info.tex_size[0] = rect->width;
feedback_info.tex_size[1] = rect->height;
set_texture_coords(feedback_info.coord, xamt, yamt);
}
#endif
glClear(GL_COLOR_BUFFER_BIT);
params.data = gl;
params.width = frame_width;
params.height = frame_height;
params.tex_width = gl->tex_w;
params.tex_height = gl->tex_h;
params.out_width = gl->vp.width;
params.out_height = gl->vp.height;
params.frame_counter = (unsigned int)frame_count;
params.info = &gl->tex_info;
params.prev_info = gl->prev_info;
params.feedback_info = &feedback_info;
params.fbo_info = NULL;
params.fbo_info_cnt = 0;
video_shader_driver_set_parameters(&params);
gl->coords.vertices = 4;
coords.handle_data = NULL;
coords.data = &gl->coords;
video_shader_driver_set_coords(&coords);
mvp.data = gl;
mvp.matrix = &gl->mvp;
video_shader_driver_set_mvp(&mvp);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
#ifdef HAVE_FBO
if (gl->fbo_inited)
gl_renderchain_render(gl, frame_count, &gl->tex_info, &feedback_info);
#endif
/* Set prev textures. */
gl_renderchain_bind_prev_texture(gl, &gl->tex_info);
#if defined(HAVE_MENU)
if (gl->menu_texture_enable)
{
menu_driver_ctl(RARCH_MENU_CTL_FRAME, NULL);
if (gl->menu_texture_enable)
gl_draw_texture(gl);
}
#endif
if (font_driver_has_render_msg() && msg)
font_driver_render_msg(NULL, msg, NULL);
#ifdef HAVE_OVERLAY
gl_render_overlay(gl);
#endif
video_context_driver_update_window_title();
performance_counter_stop(&frame_run);
#ifdef HAVE_FBO
/* Reset state which could easily mess up libretro core. */
if (gl->hw_render_fbo_init)
{
shader_info.data = gl;
shader_info.idx = 0;
shader_info.set_active = true;
video_shader_driver_use(&shader_info);
glBindTexture(GL_TEXTURE_2D, 0);
#ifndef NO_GL_FF_VERTEX
gl_disable_client_arrays();
#endif
}
#endif
#ifndef NO_GL_READ_PIXELS
/* Screenshots. */
if (gl->readback_buffer_screenshot)
{
glPixelStorei(GL_PACK_ALIGNMENT, 4);
#ifndef HAVE_OPENGLES
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
glReadBuffer(GL_BACK);
#endif
glReadPixels(gl->vp.x, gl->vp.y,
gl->vp.width, gl->vp.height,
GL_RGBA, GL_UNSIGNED_BYTE, gl->readback_buffer_screenshot);
}
#ifdef HAVE_GL_ASYNC_READBACK
#ifdef HAVE_MENU
/* Don't readback if we're in menu mode. */
else if (gl->pbo_readback_enable && !gl->menu_texture_enable)
gl_pbo_async_readback(gl);
#endif
#endif
#endif
/* Disable BFI during fast forward, slow-motion,
* and pause to prevent flicker. */
if (
settings->video.black_frame_insertion
&& !input_driver_is_nonblock_state()
&& !runloop_ctl(RUNLOOP_CTL_IS_SLOWMOTION, NULL)
&& !runloop_ctl(RUNLOOP_CTL_IS_PAUSED, NULL))
{
video_context_driver_swap_buffers();
glClear(GL_COLOR_BUFFER_BIT);
}
video_context_driver_swap_buffers();
#ifdef HAVE_GL_SYNC
if (settings->video.hard_sync && gl->have_sync)
{
static struct retro_perf_counter gl_fence = {0};
performance_counter_init(&gl_fence, "gl_fence");
performance_counter_start(&gl_fence);
glClear(GL_COLOR_BUFFER_BIT);
gl->fences[gl->fence_count++] =
glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
while (gl->fence_count > settings->video.hard_sync_frames)
{
glClientWaitSync(gl->fences[0],
GL_SYNC_FLUSH_COMMANDS_BIT, 1000000000);
glDeleteSync(gl->fences[0]);
gl->fence_count--;
memmove(gl->fences, gl->fences + 1,
gl->fence_count * sizeof(GLsync));
}
performance_counter_stop(&gl_fence);
}
#endif
#ifndef HAVE_OPENGLES
if (gl_query_core_context_in_use())
glBindVertexArray(0);
#endif
context_bind_hw_render(true);
return true;
}
static void gl_destroy_resources(gl_t *gl)
{
if (gl)
{
if (gl->empty_buf)
free(gl->empty_buf);
if (gl->conv_buffer)
free(gl->conv_buffer);
free(gl);
}
gl_shared_context_use = false;
gl_query_core_context_unset();
}
static void gl_free(void *data)
{
gl_t *gl = (gl_t*)data;
if (!gl)
return;
context_bind_hw_render(false);
#ifdef HAVE_GL_SYNC
if (gl->have_sync)
{
unsigned i;
for (i = 0; i < gl->fence_count; i++)
{
glClientWaitSync(gl->fences[i],
GL_SYNC_FLUSH_COMMANDS_BIT, 1000000000);
glDeleteSync(gl->fences[i]);
}
gl->fence_count = 0;
}
#endif
if (font_driver_has_render_msg())
font_driver_free(NULL);
video_shader_driver_deinit();
#ifndef NO_GL_FF_VERTEX
gl_disable_client_arrays();
#endif
glDeleteTextures(gl->textures, gl->texture);
#if defined(HAVE_MENU)
if (gl->menu_texture)
glDeleteTextures(1, &gl->menu_texture);
#endif
#ifdef HAVE_OVERLAY
gl_free_overlay(gl);
#endif
#if defined(HAVE_PSGL)
glBindBuffer(GL_TEXTURE_REFERENCE_BUFFER_SCE, 0);
glDeleteBuffers(1, &gl->pbo);
#endif
scaler_ctx_gen_reset(&gl->scaler);
#ifdef HAVE_GL_ASYNC_READBACK
if (gl->pbo_readback_enable)
{
glDeleteBuffers(4, gl->pbo_readback);
scaler_ctx_gen_reset(&gl->pbo_readback_scaler);
}
#endif
#ifdef HAVE_FBO
gl_renderchain_free(gl);
#endif
#ifndef HAVE_OPENGLES
if (gl_query_core_context_in_use())
{
glBindVertexArray(0);
glDeleteVertexArrays(1, &gl->vao);
}
#endif
video_context_driver_free();
gl_destroy_resources(gl);
}
static void gl_set_nonblock_state(void *data, bool state)
{
unsigned interval = 0;
gl_t *gl = (gl_t*)data;
settings_t *settings = config_get_ptr();
if (!gl)
return;
RARCH_LOG("[GL]: VSync => %s\n", state ? "off" : "on");
context_bind_hw_render(false);
if (!state)
interval = settings->video.swap_interval;
video_context_driver_swap_interval(&interval);
context_bind_hw_render(true);
}
static bool resolve_extensions(gl_t *gl, const char *context_ident)
{
settings_t *settings = config_get_ptr();
#ifndef HAVE_OPENGLES
struct retro_hw_render_callback *hwr =
video_driver_get_hw_context();
gl_query_core_context_set(hwr->context_type == RETRO_HW_CONTEXT_OPENGL_CORE);
if (gl_query_core_context_in_use())
{
RARCH_LOG("[GL]: Using Core GL context.\n");
if (!gl_check_capability(GL_CAPS_VAO))
{
RARCH_ERR("[GL]: Failed to initialize VAOs.\n");
return false;
}
glGenVertexArrays(1, &gl->vao);
}
/* GL_RGB565 internal format support.
* Even though ES2 support is claimed, the format
* is not supported on older ATI catalyst drivers.
*
* The speed gain from using GL_RGB565 is worth
* adding some workarounds for.
*/
gl->have_es2_compat = gl_check_capability(GL_CAPS_ES2_COMPAT);
gl->have_full_npot_support = gl_check_capability(GL_CAPS_FULL_NPOT_SUPPORT);
#endif
#ifdef HAVE_GL_SYNC
gl->have_sync = gl_check_capability(GL_CAPS_SYNC);
if (gl->have_sync && settings->video.hard_sync)
RARCH_LOG("[GL]: Using ARB_sync to reduce latency.\n");
#endif
video_driver_unset_rgba();
#if defined(HAVE_OPENGLES) && !defined(HAVE_PSGL)
gl->have_full_npot_support = gl_check_capability(GL_CAPS_FULL_NPOT_SUPPORT);
if (!gl_check_capability(GL_CAPS_BGRA8888))
{
video_driver_set_rgba();
RARCH_WARN("[GL]: GLES implementation does not have BGRA8888 extension.\n"
"32-bit path will require conversion.\n");
}
/* GLES3 has unpack_subimage and sRGB in core. */
gl->support_unpack_row_length = gl_check_capability(GL_CAPS_UNPACK_ROW_LENGTH);
gl->has_srgb_fbo_gles3 = gl_check_capability(GL_CAPS_SRGB_FBO_ES3);
/* TODO/FIXME - No extensions for float FBO currently. */
#endif
gl->has_fp_fbo = gl_check_capability(GL_CAPS_FP_FBO);
if (settings->video.force_srgb_disable)
gl->has_srgb_fbo = false;
else
gl->has_srgb_fbo = gl_check_capability(GL_CAPS_SRGB_FBO);
#ifdef GL_DEBUG
/* Useful for debugging, but kinda obnoxious otherwise. */
RARCH_LOG("[GL]: Supported extensions:\n");
if (gl_query_core_context_in_use())
{
#ifdef GL_NUM_EXTENSIONS
GLint exts = 0;
glGetIntegerv(GL_NUM_EXTENSIONS, &exts);
for (GLint i = 0; i < exts; i++)
{
const char *ext = (const char*)glGetStringi(GL_EXTENSIONS, i);
if (ext)
RARCH_LOG("\t%s\n", ext);
}
#endif
}
else
{
const char *ext = (const char*)glGetString(GL_EXTENSIONS);
if (ext)
{
size_t i;
struct string_list *list = string_split(ext, " ");
for (i = 0; i < list->size; i++)
RARCH_LOG("\t%s\n", list->elems[i].data);
string_list_free(list);
}
}
#endif
return true;
}
static INLINE void gl_set_texture_fmts(gl_t *gl, bool rgb32)
{
gl->internal_fmt = RARCH_GL_INTERNAL_FORMAT16;
gl->texture_type = RARCH_GL_TEXTURE_TYPE16;
gl->texture_fmt = RARCH_GL_FORMAT16;
gl->base_size = sizeof(uint16_t);
if (rgb32)
{
bool use_rgba = video_driver_supports_rgba();
gl->internal_fmt = RARCH_GL_INTERNAL_FORMAT32;
gl->texture_type = RARCH_GL_TEXTURE_TYPE32;
gl->texture_fmt = RARCH_GL_FORMAT32;
gl->base_size = sizeof(uint32_t);
if (use_rgba)
{
gl->internal_fmt = GL_RGBA;
gl->texture_type = GL_RGBA;
}
}
#ifndef HAVE_OPENGLES
else if (gl->have_es2_compat)
{
RARCH_LOG("[GL]: Using GL_RGB565 for texture uploads.\n");
gl->internal_fmt = RARCH_GL_INTERNAL_FORMAT16_565;
gl->texture_type = RARCH_GL_TEXTURE_TYPE16_565;
gl->texture_fmt = RARCH_GL_FORMAT16_565;
}
#endif
}
#ifdef HAVE_GL_ASYNC_READBACK
static void gl_init_pbo_readback(gl_t *gl)
{
unsigned i;
settings_t *settings = config_get_ptr();
bool *recording_enabled = recording_is_enabled();
#ifndef HAVE_OPENGLES3
struct scaler_ctx *scaler = NULL;
#endif
/* Only bother with this if we're doing GPU recording.
* Check recording_is_enabled() and not
* driver.recording_data, because recording is
* not initialized yet.
*/
gl->pbo_readback_enable = settings->video.gpu_record
&& *recording_enabled;
if (!gl->pbo_readback_enable)
return;
RARCH_LOG("[GL]: Async PBO readback enabled.\n");
glGenBuffers(4, gl->pbo_readback);
for (i = 0; i < 4; i++)
{
glBindBuffer(GL_PIXEL_PACK_BUFFER, gl->pbo_readback[i]);
glBufferData(GL_PIXEL_PACK_BUFFER, gl->vp.width *
gl->vp.height * sizeof(uint32_t),
NULL, GL_STREAM_READ);
}
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
#ifndef HAVE_OPENGLES3
scaler = &gl->pbo_readback_scaler;
scaler->in_width = gl->vp.width;
scaler->in_height = gl->vp.height;
scaler->out_width = gl->vp.width;
scaler->out_height = gl->vp.height;
scaler->in_stride = gl->vp.width * sizeof(uint32_t);
scaler->out_stride = gl->vp.width * 3;
scaler->in_fmt = SCALER_FMT_ARGB8888;
scaler->out_fmt = SCALER_FMT_BGR24;
scaler->scaler_type = SCALER_TYPE_POINT;
if (!scaler_ctx_gen_filter(scaler))
{
gl->pbo_readback_enable = false;
RARCH_ERR("Failed to initialize pixel conversion for PBO.\n");
glDeleteBuffers(4, gl->pbo_readback);
}
#endif
}
#endif
static const gfx_ctx_driver_t *gl_get_context(gl_t *gl)
{
enum gfx_ctx_api api;
const char *api_name = NULL;
settings_t *settings = config_get_ptr();
struct retro_hw_render_callback *hwr = video_driver_get_hw_context();
unsigned major = hwr->version_major;
unsigned minor = hwr->version_minor;
#ifdef HAVE_OPENGLES
api = GFX_CTX_OPENGL_ES_API;
api_name = "OpenGL ES 2.0";
if (hwr->context_type == RETRO_HW_CONTEXT_OPENGLES3)
{
major = 3;
minor = 0;
api_name = "OpenGL ES 3.0";
}
else if (hwr->context_type == RETRO_HW_CONTEXT_OPENGLES_VERSION)
api_name = "OpenGL ES 3.1+";
#else
api = GFX_CTX_OPENGL_API;
api_name = "OpenGL";
#endif
(void)api_name;
gl_shared_context_use = settings->video.shared_context
&& hwr->context_type != RETRO_HW_CONTEXT_NONE;
return video_context_driver_init_first(gl, settings->video.context_driver,
api, major, minor, gl_shared_context_use);
}
#ifdef GL_DEBUG
#ifdef HAVE_GL_DEBUG_ES
#define DEBUG_CALLBACK_TYPE GL_APIENTRY
#define GL_DEBUG_SOURCE_API GL_DEBUG_SOURCE_API_KHR
#define GL_DEBUG_SOURCE_WINDOW_SYSTEM GL_DEBUG_SOURCE_WINDOW_SYSTEM_KHR
#define GL_DEBUG_SOURCE_SHADER_COMPILER GL_DEBUG_SOURCE_SHADER_COMPILER_KHR
#define GL_DEBUG_SOURCE_THIRD_PARTY GL_DEBUG_SOURCE_THIRD_PARTY_KHR
#define GL_DEBUG_SOURCE_APPLICATION GL_DEBUG_SOURCE_APPLICATION_KHR
#define GL_DEBUG_SOURCE_OTHER GL_DEBUG_SOURCE_OTHER_KHR
#define GL_DEBUG_TYPE_ERROR GL_DEBUG_TYPE_ERROR_KHR
#define GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_KHR
#define GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_KHR
#define GL_DEBUG_TYPE_PORTABILITY GL_DEBUG_TYPE_PORTABILITY_KHR
#define GL_DEBUG_TYPE_PERFORMANCE GL_DEBUG_TYPE_PERFORMANCE_KHR
#define GL_DEBUG_TYPE_MARKER GL_DEBUG_TYPE_MARKER_KHR
#define GL_DEBUG_TYPE_PUSH_GROUP GL_DEBUG_TYPE_PUSH_GROUP_KHR
#define GL_DEBUG_TYPE_POP_GROUP GL_DEBUG_TYPE_POP_GROUP_KHR
#define GL_DEBUG_TYPE_OTHER GL_DEBUG_TYPE_OTHER_KHR
#define GL_DEBUG_SEVERITY_HIGH GL_DEBUG_SEVERITY_HIGH_KHR
#define GL_DEBUG_SEVERITY_MEDIUM GL_DEBUG_SEVERITY_MEDIUM_KHR
#define GL_DEBUG_SEVERITY_LOW GL_DEBUG_SEVERITY_LOW_KHR
#else
#define DEBUG_CALLBACK_TYPE APIENTRY
#endif
static void DEBUG_CALLBACK_TYPE gl_debug_cb(GLenum source, GLenum type,
GLuint id, GLenum severity, GLsizei length,
const GLchar *message, void *userParam)
{
const char *src = NULL;
const char *typestr = NULL;
gl_t *gl = (gl_t*)userParam; /* Useful for debugger. */
(void)gl;
(void)id;
(void)length;
switch (source)
{
case GL_DEBUG_SOURCE_API:
src = "API";
break;
case GL_DEBUG_SOURCE_WINDOW_SYSTEM:
src = "Window system";
break;
case GL_DEBUG_SOURCE_SHADER_COMPILER:
src = "Shader compiler";
break;
case GL_DEBUG_SOURCE_THIRD_PARTY:
src = "3rd party";
break;
case GL_DEBUG_SOURCE_APPLICATION:
src = "Application";
break;
case GL_DEBUG_SOURCE_OTHER:
src = "Other";
break;
default:
src = "Unknown";
break;
}
switch (type)
{
case GL_DEBUG_TYPE_ERROR:
typestr = "Error";
break;
case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR:
typestr = "Deprecated behavior";
break;
case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR:
typestr = "Undefined behavior";
break;
case GL_DEBUG_TYPE_PORTABILITY:
typestr = "Portability";
break;
case GL_DEBUG_TYPE_PERFORMANCE:
typestr = "Performance";
break;
case GL_DEBUG_TYPE_MARKER:
typestr = "Marker";
break;
case GL_DEBUG_TYPE_PUSH_GROUP:
typestr = "Push group";
break;
case GL_DEBUG_TYPE_POP_GROUP:
typestr = "Pop group";
break;
case GL_DEBUG_TYPE_OTHER:
typestr = "Other";
break;
default:
typestr = "Unknown";
break;
}
switch (severity)
{
case GL_DEBUG_SEVERITY_HIGH:
RARCH_ERR("[GL debug (High, %s, %s)]: %s\n", src, typestr, message);
break;
case GL_DEBUG_SEVERITY_MEDIUM:
RARCH_WARN("[GL debug (Medium, %s, %s)]: %s\n", src, typestr, message);
break;
case GL_DEBUG_SEVERITY_LOW:
RARCH_LOG("[GL debug (Low, %s, %s)]: %s\n", src, typestr, message);
break;
}
}
static void gl_begin_debug(gl_t *gl)
{
if (gl_check_capability(GL_CAPS_DEBUG))
{
#ifdef HAVE_GL_DEBUG_ES
glDebugMessageCallbackKHR(gl_debug_cb, gl);
glDebugMessageControlKHR(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_TRUE);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_KHR);
#else
glDebugMessageCallback(gl_debug_cb, gl);
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_TRUE);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
#endif
}
else
RARCH_ERR("Neither GL_KHR_debug nor GL_ARB_debug_output are implemented. Cannot start GL debugging.\n");
}
#endif
static void *gl_init(const video_info_t *video, const input_driver_t **input, void **input_data)
{
gfx_ctx_mode_t mode;
gfx_ctx_input_t inp;
unsigned interval, mip_level;
unsigned full_x, full_y;
video_shader_ctx_filter_t shader_filter;
video_shader_ctx_info_t shader_info;
video_shader_ctx_ident_t ident_info;
video_shader_ctx_wrap_t wrap_info = {0};
unsigned win_width = 0;
unsigned win_height = 0;
unsigned temp_width = 0;
unsigned temp_height = 0;
bool force_smooth = false;
const char *vendor = NULL;
const char *renderer = NULL;
const char *version = NULL;
struct retro_hw_render_callback *hwr = NULL;
char *error_string = NULL;
settings_t *settings = config_get_ptr();
gl_t *gl = (gl_t*)calloc(1, sizeof(gl_t));
const gfx_ctx_driver_t *ctx_driver = gl_get_context(gl);
if (!gl || !ctx_driver)
goto error;
video_context_driver_set((const gfx_ctx_driver_t*)ctx_driver);
gl->video_info = *video;
RARCH_LOG("Found GL context: %s\n", ctx_driver->ident);
video_context_driver_get_video_size(&mode);
full_x = mode.width;
full_y = mode.height;
mode.width = 0;
mode.height = 0;
RARCH_LOG("Detecting screen resolution %ux%u.\n", full_x, full_y);
interval = video->vsync ? settings->video.swap_interval : 0;
video_context_driver_swap_interval(&interval);
win_width = video->width;
win_height = video->height;
if (video->fullscreen && (win_width == 0) && (win_height == 0))
{
win_width = full_x;
win_height = full_y;
}
mode.width = win_width;
mode.height = win_height;
mode.fullscreen = video->fullscreen;
if (!video_context_driver_set_video_mode(&mode))
goto error;
/* Clear out potential error flags in case we use cached context. */
glGetError();
vendor = (const char*)glGetString(GL_VENDOR);
renderer = (const char*)glGetString(GL_RENDERER);
version = (const char*)glGetString(GL_VERSION);
RARCH_LOG("[GL]: Vendor: %s, Renderer: %s.\n", vendor, renderer);
RARCH_LOG("[GL]: Version: %s.\n", version);
if (!string_is_empty(version))
sscanf(version, "%d.%d", &gl->version_major, &gl->version_minor);
#ifndef RARCH_CONSOLE
rglgen_resolve_symbols(ctx_driver->get_proc_address);
#endif
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation(GL_FUNC_ADD);
if (!resolve_extensions(gl, ctx_driver->ident))
goto error;
#ifdef GL_DEBUG
gl_begin_debug(gl);
#endif
gl->vsync = video->vsync;
gl->fullscreen = video->fullscreen;
mode.width = 0;
mode.height = 0;
video_context_driver_get_video_size(&mode);
temp_width = mode.width;
temp_height = mode.height;
mode.width = 0;
mode.height = 0;
/* Get real known video size, which might have been altered by context. */
if (temp_width != 0 && temp_height != 0)
video_driver_set_size(&temp_width, &temp_height);
video_driver_get_size(&temp_width, &temp_height);
RARCH_LOG("GL: Using resolution %ux%u\n", temp_width, temp_height);
hwr = video_driver_get_hw_context();
gl->vertex_ptr = hwr->bottom_left_origin
? vertexes : vertexes_flipped;
/* Better pipelining with GPU due to synchronous glSubTexImage.
* Multiple async PBOs would be an alternative,
* but still need multiple textures with PREV.
*/
gl->textures = 4;
#ifdef HAVE_FBO
gl->hw_render_use = hwr->context_type != RETRO_HW_CONTEXT_NONE;
if (gl->hw_render_use)
{
/* All on GPU, no need to excessively
* create textures. */
gl->textures = 1;
#ifdef GL_DEBUG
context_bind_hw_render(true);
gl_begin_debug(gl);
context_bind_hw_render(false);
#endif
}
#endif
gl->white_color_ptr = white_color;
#ifdef HAVE_GLSL
gl_glsl_set_get_proc_address(ctx_driver->get_proc_address);
gl_glsl_set_context_type(gl_query_core_context_in_use(),
hwr->version_major, hwr->version_minor);
#endif
if (!video_shader_driver_init_first())
goto error;
video_shader_driver_get_ident(&ident_info);
RARCH_LOG("[GL]: Default shader backend found: %s.\n", ident_info.ident);
if (!gl_shader_init(gl))
{
RARCH_ERR("[GL]: Shader initialization failed.\n");
goto error;
}
{
unsigned minimum;
video_shader_ctx_texture_t texture_info;
video_shader_driver_get_prev_textures(&texture_info);
minimum = texture_info.id;
gl->textures = MAX(minimum + 1, gl->textures);
}
if (!video_shader_driver_info(&shader_info))
goto error;
RARCH_LOG("[GL]: Using %u textures.\n", gl->textures);
RARCH_LOG("[GL]: Loaded %u program(s).\n",
shader_info.num);
gl->tex_w = gl->tex_h = (RARCH_SCALE_BASE * video->input_scale);
gl->keep_aspect = video->force_aspect;
/* Apparently need to set viewport for passes
* when we aren't using FBOs. */
gl_set_shader_viewport(gl, 0);
gl_set_shader_viewport(gl, 1);
mip_level = 1;
gl->tex_mipmap = video_shader_driver_mipmap_input(&mip_level);
shader_filter.index = 1;
shader_filter.smooth = &force_smooth;
if (video_shader_driver_filter_type(&shader_filter))
gl->tex_min_filter = gl->tex_mipmap ? (force_smooth ?
GL_LINEAR_MIPMAP_LINEAR : GL_NEAREST_MIPMAP_NEAREST)
: (force_smooth ? GL_LINEAR : GL_NEAREST);
else
gl->tex_min_filter = gl->tex_mipmap ?
(video->smooth ? GL_LINEAR_MIPMAP_LINEAR : GL_NEAREST_MIPMAP_NEAREST)
: (video->smooth ? GL_LINEAR : GL_NEAREST);
gl->tex_mag_filter = min_filter_to_mag(gl->tex_min_filter);
wrap_info.idx = 1;
video_shader_driver_wrap_type(&wrap_info);
gl->wrap_mode = gl_wrap_type_to_enum(wrap_info.type);
gl_set_texture_fmts(gl, video->rgb32);
#ifndef HAVE_OPENGLES
if (!gl_query_core_context_in_use())
glEnable(GL_TEXTURE_2D);
#endif
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glDisable(GL_DITHER);
memcpy(gl->tex_info.coord, tex_coords, sizeof(gl->tex_info.coord));
gl->coords.vertex = gl->vertex_ptr;
gl->coords.tex_coord = gl->tex_info.coord;
gl->coords.color = gl->white_color_ptr;
gl->coords.lut_tex_coord = tex_coords;
gl->coords.vertices = 4;
/* Empty buffer that we use to clear out
* the texture with on res change. */
gl->empty_buf = calloc(sizeof(uint32_t), gl->tex_w * gl->tex_h);
#if !defined(HAVE_PSGL)
gl->conv_buffer = calloc(sizeof(uint32_t), gl->tex_w * gl->tex_h);
if (!gl->conv_buffer)
goto error;
#endif
gl_init_textures(gl, video);
gl_init_textures_data(gl);
#ifdef HAVE_FBO
gl_renderchain_init(gl, gl->tex_w, gl->tex_h);
if (gl->hw_render_use &&
!gl_init_hw_render(gl, gl->tex_w, gl->tex_h))
goto error;
#endif
inp.input = input;
inp.input_data = input_data;
video_context_driver_input_driver(&inp);
if (settings->video.font_enable)
{
if (!font_driver_init_first(NULL, NULL, gl, *settings->path.font
? settings->path.font : NULL, settings->video.font_size, false,
FONT_DRIVER_RENDER_OPENGL_API))
RARCH_ERR("[GL]: Failed to initialize font renderer.\n");
}
#ifdef HAVE_GL_ASYNC_READBACK
gl_init_pbo_readback(gl);
#endif
if (!gl_check_error(&error_string))
{
RARCH_ERR("%s\n", error_string);
free(error_string);
goto error;
}
context_bind_hw_render(true);
return gl;
error:
video_context_driver_destroy();
gl_destroy_resources(gl);
return NULL;
}
static bool gl_alive(void *data)
{
gfx_ctx_size_t size_data;
unsigned temp_width = 0;
unsigned temp_height = 0;
bool ret = false;
bool quit = false;
bool resize = false;
gl_t *gl = (gl_t*)data;
/* Needed because some context drivers don't track their sizes */
video_driver_get_size(&temp_width, &temp_height);
size_data.quit = &quit;
size_data.resize = &resize;
size_data.width = &temp_width;
size_data.height = &temp_height;
if (video_context_driver_check_window(&size_data))
{
if (quit)
gl->quitting = true;
else if (resize)
gl->should_resize = true;
ret = !gl->quitting;
}
if (temp_width != 0 && temp_height != 0)
video_driver_set_size(&temp_width, &temp_height);
return ret;
}
static bool gl_focus(void *data)
{
return video_context_driver_focus();
}
static bool gl_suppress_screensaver(void *data, bool enable)
{
bool enabled = enable;
return video_context_driver_suppress_screensaver(&enabled);
}
static bool gl_has_windowed(void *data)
{
return video_context_driver_has_windowed();
}
static void gl_update_tex_filter_frame(gl_t *gl)
{
video_shader_ctx_filter_t shader_filter;
unsigned i, mip_level;
GLenum wrap_mode;
GLuint new_filt;
video_shader_ctx_wrap_t wrap_info = {0};
bool smooth = false;
settings_t *settings = config_get_ptr();
if (!gl)
return;
context_bind_hw_render(false);
shader_filter.index = 1;
shader_filter.smooth = &smooth;
if (!video_shader_driver_filter_type(&shader_filter))
smooth = settings->video.smooth;
mip_level = 1;
wrap_info.idx = 1;
video_shader_driver_wrap_type(&wrap_info);
wrap_mode = gl_wrap_type_to_enum(wrap_info.type);
gl->tex_mipmap = video_shader_driver_mipmap_input(&mip_level);
gl->video_info.smooth = smooth;
new_filt = gl->tex_mipmap ? (smooth ?
GL_LINEAR_MIPMAP_LINEAR : GL_NEAREST_MIPMAP_NEAREST)
: (smooth ? GL_LINEAR : GL_NEAREST);
if (new_filt == gl->tex_min_filter && wrap_mode == gl->wrap_mode)
return;
gl->tex_min_filter = new_filt;
gl->tex_mag_filter = min_filter_to_mag(gl->tex_min_filter);
gl->wrap_mode = wrap_mode;
for (i = 0; i < gl->textures; i++)
{
if (!gl->texture[i])
continue;
glBindTexture(GL_TEXTURE_2D, gl->texture[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, gl->wrap_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, gl->wrap_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl->tex_mag_filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl->tex_min_filter);
}
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
context_bind_hw_render(true);
}
static bool gl_set_shader(void *data,
enum rarch_shader_type type, const char *path)
{
#if defined(HAVE_GLSL) || defined(HAVE_CG)
unsigned textures;
video_shader_ctx_texture_t texture_info;
video_shader_ctx_init_t init_data;
gl_t *gl = (gl_t*)data;
if (!gl)
return false;
context_bind_hw_render(false);
if (type == RARCH_SHADER_NONE)
return false;
video_shader_driver_deinit();
switch (type)
{
#ifdef HAVE_GLSL
case RARCH_SHADER_GLSL:
break;
#endif
#ifdef HAVE_CG
case RARCH_SHADER_CG:
break;
#endif
default:
RARCH_ERR("[GL]: Cannot find shader core for path: %s.\n", path);
goto error;
}
#ifdef HAVE_FBO
gl_deinit_fbo(gl);
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
#endif
init_data.shader_type = type;
init_data.shader = NULL;
init_data.data = gl;
init_data.path = path;
if (!video_shader_driver_init(&init_data))
{
init_data.path = NULL;
video_shader_driver_init(&init_data);
RARCH_WARN("[GL]: Failed to set multipass shader. Falling back to stock.\n");
goto error;
}
gl_update_tex_filter_frame(gl);
video_shader_driver_get_prev_textures(&texture_info);
textures = texture_info.id + 1;
if (textures > gl->textures) /* Have to reinit a bit. */
{
#if defined(HAVE_FBO)
gl_deinit_hw_render(gl);
#endif
glDeleteTextures(gl->textures, gl->texture);
#if defined(HAVE_PSGL)
glBindBuffer(GL_TEXTURE_REFERENCE_BUFFER_SCE, 0);
glDeleteBuffers(1, &gl->pbo);
#endif
gl->textures = textures;
RARCH_LOG("[GL]: Using %u textures.\n", gl->textures);
gl->tex_index = 0;
gl_init_textures(gl, &gl->video_info);
gl_init_textures_data(gl);
#if defined(HAVE_FBO)
if (gl->hw_render_use)
gl_init_hw_render(gl, gl->tex_w, gl->tex_h);
#endif
}
#ifdef HAVE_FBO
gl_renderchain_init(gl, gl->tex_w, gl->tex_h);
#endif
/* Apparently need to set viewport for passes when we aren't using FBOs. */
gl_set_shader_viewport(gl, 0);
gl_set_shader_viewport(gl, 1);
context_bind_hw_render(true);
#if defined(_WIN32) && !defined(_XBOX)
shader_dlg_params_reload();
#endif
#endif
return true;
error:
context_bind_hw_render(true);
return false;
}
static void gl_viewport_info(void *data, struct video_viewport *vp)
{
unsigned width, height;
unsigned top_y, top_dist;
gl_t *gl = (gl_t*)data;
video_driver_get_size(&width, &height);
*vp = gl->vp;
vp->full_width = width;
vp->full_height = height;
/* Adjust as GL viewport is bottom-up. */
top_y = vp->y + vp->height;
top_dist = height - top_y;
vp->y = top_dist;
}
static bool gl_read_viewport(void *data, uint8_t *buffer)
{
#ifndef NO_GL_READ_PIXELS
static struct retro_perf_counter read_viewport = {0};
unsigned num_pixels = 0;
gl_t *gl = (gl_t*)data;
if (!gl)
return false;
context_bind_hw_render(false);
performance_counter_init(&read_viewport, "read_viewport");
performance_counter_start(&read_viewport);
num_pixels = gl->vp.width * gl->vp.height;
#ifdef HAVE_GL_ASYNC_READBACK
if (gl->pbo_readback_enable)
{
const uint8_t *ptr = NULL;
/* Don't readback if we're in menu mode.
* We haven't buffered up enough frames yet, come back later. */
if (!gl->pbo_readback_valid[gl->pbo_readback_index])
goto error;
gl->pbo_readback_valid[gl->pbo_readback_index] = false;
glBindBuffer(GL_PIXEL_PACK_BUFFER,
gl->pbo_readback[gl->pbo_readback_index]);
#ifdef HAVE_OPENGLES3
/* Slower path, but should work on all implementations at least. */
ptr = (const uint8_t*)glMapBufferRange(GL_PIXEL_PACK_BUFFER,
0, num_pixels * sizeof(uint32_t), GL_MAP_READ_BIT);
if (ptr)
{
unsigned y;
for (y = 0; y < gl->vp.height; y++)
{
video_frame_convert_rgba_to_bgr(
(const void*)ptr,
buffer,
gl->vp.width);
}
}
#else
ptr = (const uint8_t*)glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY);
if (ptr)
scaler_ctx_scale(&gl->pbo_readback_scaler, buffer, ptr);
#endif
if (!ptr)
{
RARCH_ERR("[GL]: Failed to map pixel unpack buffer.\n");
goto error;
}
glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
}
else /* Use slow synchronous readbacks. Use this with plain screenshots
as we don't really care about performance in this case. */
#endif
{
/* GLES2 only guarantees GL_RGBA/GL_UNSIGNED_BYTE
* readbacks so do just that.
* GLES2 also doesn't support reading back data
* from front buffer, so render a cached frame
* and have gl_frame() do the readback while it's
* in the back buffer.
*
* Keep codepath similar for GLES and desktop GL.
*/
gl->readback_buffer_screenshot = malloc(num_pixels * sizeof(uint32_t));
if (!gl->readback_buffer_screenshot)
{
performance_counter_stop(&read_viewport);
goto error;
}
video_driver_cached_frame_render();
video_frame_convert_rgba_to_bgr(
(const void*)gl->readback_buffer_screenshot,
buffer,
num_pixels);
free(gl->readback_buffer_screenshot);
gl->readback_buffer_screenshot = NULL;
}
performance_counter_stop(&read_viewport);
context_bind_hw_render(true);
return true;
error:
context_bind_hw_render(true);
#endif
return false;
}
#if 0
#define READ_RAW_GL_FRAME_TEST
#endif
#if defined(READ_RAW_GL_FRAME_TEST)
static void* gl_read_frame_raw(void *data, unsigned *width_p,
unsigned *height_p, size_t *pitch_p)
{
gl_t *gl = (gl_t*)data;
unsigned width = gl->last_width[gl->tex_index];
unsigned height = gl->last_height[gl->tex_index];
size_t pitch = gl->tex_w * gl->base_size;
void* buffer = NULL;
void* buffer_texture = NULL;
#ifdef HAVE_FBO
if (gl->hw_render_use)
{
buffer = malloc(pitch * height);
if (!buffer)
return NULL;
}
#endif
buffer_texture = malloc(pitch * gl->tex_h);
if (!buffer_texture)
{
if (buffer)
free(buffer);
return NULL;
}
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
glGetTexImage(GL_TEXTURE_2D, 0,
gl->texture_type, gl->texture_fmt, buffer_texture);
*width_p = width;
*height_p = height;
*pitch_p = pitch;
#ifdef HAVE_FBO
if (gl->hw_render_use)
{
unsigned i;
for(i = 0; i < height ; i++)
memcpy((uint8_t*)buffer + i * pitch,
(uint8_t*)buffer_texture + (height - 1 - i) * pitch, pitch);
free(buffer_texture);
return buffer;
}
#endif
return buffer_texture;
}
#endif
bool gl_load_luts(const struct video_shader *shader,
GLuint *textures_lut)
{
unsigned i;
unsigned num_luts = MIN(shader->luts, GFX_MAX_TEXTURES);
if (!shader->luts)
return true;
glGenTextures(num_luts, textures_lut);
for (i = 0; i < num_luts; i++)
{
if (!gl_renderchain_add_lut(shader, i, textures_lut))
return false;
}
glBindTexture(GL_TEXTURE_2D, 0);
return true;
}
#ifdef HAVE_OVERLAY
static bool gl_overlay_load(void *data,
const void *image_data, unsigned num_images)
{
unsigned i, j;
gl_t *gl = (gl_t*)data;
const struct texture_image *images =
(const struct texture_image*)image_data;
if (!gl)
return false;
context_bind_hw_render(false);
gl_free_overlay(gl);
gl->overlay_tex = (GLuint*)calloc(num_images, sizeof(*gl->overlay_tex));
if (!gl->overlay_tex)
{
context_bind_hw_render(true);
return false;
}
gl->overlay_vertex_coord = (GLfloat*)
calloc(2 * 4 * num_images, sizeof(GLfloat));
gl->overlay_tex_coord = (GLfloat*)
calloc(2 * 4 * num_images, sizeof(GLfloat));
gl->overlay_color_coord = (GLfloat*)
calloc(4 * 4 * num_images, sizeof(GLfloat));
if ( !gl->overlay_vertex_coord
|| !gl->overlay_tex_coord
|| !gl->overlay_color_coord)
return false;
gl->overlays = num_images;
glGenTextures(num_images, gl->overlay_tex);
for (i = 0; i < num_images; i++)
{
unsigned alignment = video_pixel_get_alignment(images[i].width
* sizeof(uint32_t));
gl_load_texture_data(gl->overlay_tex[i],
RARCH_WRAP_EDGE, TEXTURE_FILTER_LINEAR,
alignment,
images[i].width, images[i].height, images[i].pixels,
sizeof(uint32_t));
/* Default. Stretch to whole screen. */
gl_overlay_tex_geom(gl, i, 0, 0, 1, 1);
gl_overlay_vertex_geom(gl, i, 0, 0, 1, 1);
for (j = 0; j < 16; j++)
gl->overlay_color_coord[16 * i + j] = 1.0f;
}
context_bind_hw_render(true);
return true;
}
static void gl_overlay_enable(void *data, bool state)
{
gl_t *gl = (gl_t*)data;
if (!gl)
return;
gl->overlay_enable = state;
if (gl->fullscreen)
video_context_driver_show_mouse(&state);
}
static void gl_overlay_full_screen(void *data, bool enable)
{
gl_t *gl = (gl_t*)data;
if (gl)
gl->overlay_full_screen = enable;
}
static void gl_overlay_set_alpha(void *data, unsigned image, float mod)
{
GLfloat *color = NULL;
gl_t *gl = (gl_t*)data;
if (!gl)
return;
color = (GLfloat*)&gl->overlay_color_coord[image * 16];
color[ 0 + 3] = mod;
color[ 4 + 3] = mod;
color[ 8 + 3] = mod;
color[12 + 3] = mod;
}
static const video_overlay_interface_t gl_overlay_interface = {
gl_overlay_enable,
gl_overlay_load,
gl_overlay_tex_geom,
gl_overlay_vertex_geom,
gl_overlay_full_screen,
gl_overlay_set_alpha,
};
static void gl_get_overlay_interface(void *data,
const video_overlay_interface_t **iface)
{
(void)data;
*iface = &gl_overlay_interface;
}
#endif
static retro_proc_address_t gl_get_proc_address(void *data, const char *sym)
{
gfx_ctx_proc_address_t proc_address = {0};
proc_address.sym = sym;
video_context_driver_get_proc_address(&proc_address);
return proc_address.addr;
}
static void gl_set_aspect_ratio(void *data, unsigned aspect_ratio_idx)
{
gl_t *gl = (gl_t*)data;
switch (aspect_ratio_idx)
{
case ASPECT_RATIO_SQUARE:
video_driver_set_viewport_square_pixel();
break;
case ASPECT_RATIO_CORE:
video_driver_set_viewport_core();
break;
case ASPECT_RATIO_CONFIG:
video_driver_set_viewport_config();
break;
default:
break;
}
video_driver_set_aspect_ratio_value(
aspectratio_lut[aspect_ratio_idx].value);
if (!gl)
return;
gl->keep_aspect = true;
gl->should_resize = true;
}
static void gl_apply_state_changes(void *data)
{
gl_t *gl = (gl_t*)data;
if (gl)
gl->should_resize = true;
}
static void gl_get_video_output_size(void *data,
unsigned *width, unsigned *height)
{
gfx_ctx_size_t size_data;
size_data.width = width;
size_data.height = height;
video_context_driver_get_video_output_size(&size_data);
}
static void gl_get_video_output_prev(void *data)
{
video_context_driver_get_video_output_prev();
}
static void gl_get_video_output_next(void *data)
{
video_context_driver_get_video_output_next();
}
static void video_texture_load_gl(
struct texture_image *ti,
enum texture_filter_type filter_type,
uintptr_t *id)
{
/* Generate the OpenGL texture object */
glGenTextures(1, (GLuint*)id);
gl_load_texture_data((GLuint)*id,
RARCH_WRAP_EDGE, filter_type,
4 /* TODO/FIXME - dehardcode */,
ti->width, ti->height, ti->pixels,
sizeof(uint32_t) /* TODO/FIXME - dehardcode */
);
}
#ifdef HAVE_THREADS
static int video_texture_load_wrap_gl_mipmap(void *data)
{
uintptr_t id = 0;
if (!data)
return 0;
video_texture_load_gl((struct texture_image*)data,
TEXTURE_FILTER_MIPMAP_LINEAR, &id);
return id;
}
static int video_texture_load_wrap_gl(void *data)
{
uintptr_t id = 0;
if (!data)
return 0;
video_texture_load_gl((struct texture_image*)data,
TEXTURE_FILTER_LINEAR, &id);
return id;
}
#endif
static uintptr_t gl_load_texture(void *video_data, void *data,
bool threaded, enum texture_filter_type filter_type)
{
uintptr_t id = 0;
#ifdef HAVE_THREADS
if (threaded)
{
custom_command_method_t func = video_texture_load_wrap_gl;
switch (filter_type)
{
case TEXTURE_FILTER_MIPMAP_LINEAR:
case TEXTURE_FILTER_MIPMAP_NEAREST:
func = video_texture_load_wrap_gl_mipmap;
break;
default:
break;
}
return video_thread_texture_load(data, func);
}
#endif
video_texture_load_gl((struct texture_image*)data, filter_type, &id);
return id;
}
static void gl_unload_texture(void *data, uintptr_t id)
{
GLuint glid;
if (!id)
return;
glid = (GLuint)id;
glDeleteTextures(1, &glid);
}
static const video_poke_interface_t gl_poke_interface = {
gl_load_texture,
gl_unload_texture,
gl_set_video_mode,
NULL,
gl_get_video_output_size,
gl_get_video_output_prev,
gl_get_video_output_next,
#ifdef HAVE_FBO
gl_get_current_framebuffer,
#else
NULL,
#endif
gl_get_proc_address,
gl_set_aspect_ratio,
gl_apply_state_changes,
#if defined(HAVE_MENU)
gl_set_texture_frame,
gl_set_texture_enable,
gl_set_osd_msg,
gl_show_mouse,
#else
NULL,
NULL,
NULL,
NULL,
#endif
NULL,
#ifdef HAVE_MENU
gl_get_current_shader,
#endif
};
static void gl_get_poke_interface(void *data,
const video_poke_interface_t **iface)
{
(void)data;
*iface = &gl_poke_interface;
}
video_driver_t video_gl = {
gl_init,
gl_frame,
gl_set_nonblock_state,
gl_alive,
gl_focus,
gl_suppress_screensaver,
gl_has_windowed,
gl_set_shader,
gl_free,
"gl",
gl_set_viewport,
gl_set_rotation,
gl_viewport_info,
gl_read_viewport,
#if defined(READ_RAW_GL_FRAME_TEST)
gl_read_frame_raw,
#else
NULL,
#endif
#ifdef HAVE_OVERLAY
gl_get_overlay_interface,
#endif
gl_get_poke_interface,
gl_wrap_type_to_enum,
};
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