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RetroArch/gfx/drivers/gl1.c
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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
* Copyright (C) 2016-2019 - Brad Parker
*
* 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/>.
*/
/* OpenGL 1.x driver.
*
* Minimum version : OpenGL 1.1 (1997)
*
* We are targeting a minimum of OpenGL 1.1 and the Microsoft
* "GDI Generic" * software GL implementation.
* Any additional features added for later 1.x versions should only be
* enabled if they are detected at runtime. */
#include <stddef.h>
#include <retro_miscellaneous.h>
#include <formats/image.h>
#include <string/stdstring.h>
#include <retro_math.h>
#include <gfx/video_frame.h>
#include <gfx/scaler/pixconv.h>
#ifdef HAVE_CONFIG_H
#include "../../config.h"
#endif
#ifdef HAVE_MENU
#include "../../menu/menu_driver.h"
#endif
#ifdef HAVE_GFX_WIDGETS
#include "../gfx_widgets.h"
#endif
#include "../font_driver.h"
#include "../../driver.h"
#include "../../configuration.h"
#include "../../retroarch.h"
#include "../../verbosity.h"
#include "../../frontend/frontend_driver.h"
#include "../common/gl1_common.h"
#if defined(_WIN32) && !defined(_XBOX)
#include "../common/win32_common.h"
#endif
#ifdef HAVE_THREADS
#include "../video_thread_wrapper.h"
#endif
#ifdef VITA
#include <defines/psp_defines.h>
static bool vgl_inited = false;
#endif
static struct video_ortho gl1_default_ortho = {0, 1, 0, 1, -1, 1};
/* Used for the last pass when rendering to the back buffer. */
static const GLfloat gl1_vertexes_flipped[] = {
0, 1,
1, 1,
0, 0,
1, 0
};
static const GLfloat gl1_vertexes[] = {
0, 0,
1, 0,
0, 1,
1, 1
};
static const GLfloat gl1_tex_coords[] = {
0, 0,
1, 0,
0, 1,
1, 1
};
static const GLfloat gl1_white_color[] = {
1, 1, 1, 1,
1, 1, 1, 1,
1, 1, 1, 1,
1, 1, 1, 1,
};
#define gl1_context_bind_hw_render(gl1, enable) \
if (gl1->shared_context_use) \
gl1->ctx_driver->bind_hw_render(gl1->ctx_data, enable)
#ifdef HAVE_OVERLAY
static void gl1_render_overlay(gl1_t *gl,
unsigned width,
unsigned height)
{
unsigned i;
glEnable(GL_BLEND);
if (gl->overlay_full_screen)
glViewport(0, 0, width, height);
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;
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
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);
}
static void gl1_free_overlay(gl1_t *gl)
{
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 gl1_overlay_vertex_geom(void *data,
unsigned image,
float x, float y,
float w, float h)
{
GLfloat *vertex = NULL;
gl1_t *gl = (gl1_t*)data;
if (!gl)
return;
if (image > gl->overlays)
{
RARCH_ERR("[GL]: 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 gl1_overlay_tex_geom(void *data,
unsigned image,
GLfloat x, GLfloat y,
GLfloat w, GLfloat h)
{
GLfloat *tex = NULL;
gl1_t *gl = (gl1_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;
}
#endif
static bool is_pot(unsigned x)
{
return (x & (x - 1)) == 0;
}
static unsigned get_pot(unsigned x)
{
return (is_pot(x) ? x : next_pow2(x));
}
static void *gl1_gfx_init(const video_info_t *video,
input_driver_t **input, void **input_data)
{
unsigned full_x, full_y;
void *ctx_data = NULL;
const gfx_ctx_driver_t *ctx_driver = NULL;
unsigned mode_width = 0;
unsigned mode_height = 0;
unsigned win_width = 0, win_height = 0;
unsigned temp_width = 0, temp_height = 0;
settings_t *settings = config_get_ptr();
bool video_smooth = settings->bools.video_smooth;
bool video_font_enable = settings->bools.video_font_enable;
const char *video_context_driver = settings->arrays.video_context_driver;
gl1_t *gl1 = (gl1_t*)calloc(1, sizeof(*gl1));
const char *vendor = NULL;
const char *renderer = NULL;
const char *version = NULL;
const char *extensions = NULL;
int interval = 0;
struct retro_hw_render_callback *hwr = NULL;
if (!gl1)
return NULL;
*input = NULL;
*input_data = NULL;
gl1->video_width = video->width;
gl1->video_height = video->height;
gl1->rgb32 = video->rgb32;
gl1->video_bits = video->rgb32 ? 32 : 16;
if (video->rgb32)
gl1->video_pitch = video->width * 4;
else
gl1->video_pitch = video->width * 2;
ctx_driver = video_context_driver_init_first(gl1,
video_context_driver,
GFX_CTX_OPENGL_API, 1, 1, false, &ctx_data);
if (!ctx_driver)
goto error;
if (ctx_data)
gl1->ctx_data = ctx_data;
gl1->ctx_driver = ctx_driver;
video_context_driver_set((const gfx_ctx_driver_t*)ctx_driver);
RARCH_LOG("[GL1]: Found GL1 context: \"%s\".\n", ctx_driver->ident);
if (gl1->ctx_driver->get_video_size)
gl1->ctx_driver->get_video_size(gl1->ctx_data,
&mode_width, &mode_height);
#if defined(__APPLE__) && !defined(IOS)
/* This is a hack for now to work around a very annoying
* issue that currently eludes us. */
if ( !gl1->ctx_driver->set_video_mode
|| !gl1->ctx_driver->set_video_mode(gl1->ctx_data,
win_width, win_height, video->fullscreen))
goto error;
#endif
full_x = mode_width;
full_y = mode_height;
mode_width = 0;
mode_height = 0;
#ifdef VITA
if (!vgl_inited)
{
vglInitExtended(0x1400000, full_x, full_y, RAM_THRESHOLD, SCE_GXM_MULTISAMPLE_4X);
vglUseVram(GL_TRUE);
vgl_inited = true;
}
#endif
/* Clear out potential error flags in case we use cached context. */
glGetError();
if (string_is_equal(ctx_driver->ident, "null"))
goto error;
RARCH_LOG("[GL1]: Detecting screen resolution: %ux%u.\n", full_x, full_y);
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;
interval = video->swap_interval;
if (ctx_driver->swap_interval)
{
bool adaptive_vsync_enabled = video_driver_test_all_flags(
GFX_CTX_FLAGS_ADAPTIVE_VSYNC) && video->adaptive_vsync;
if (adaptive_vsync_enabled && interval == 1)
interval = -1;
ctx_driver->swap_interval(gl1->ctx_data, interval);
}
if ( !gl1->ctx_driver->set_video_mode
|| !gl1->ctx_driver->set_video_mode(gl1->ctx_data,
win_width, win_height, video->fullscreen))
goto error;
gl1->fullscreen = video->fullscreen;
mode_width = 0;
mode_height = 0;
if (gl1->ctx_driver->get_video_size)
gl1->ctx_driver->get_video_size(gl1->ctx_data,
&mode_width, &mode_height);
temp_width = mode_width;
temp_height = mode_height;
/* 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("[GL1]: Using resolution %ux%u.\n", temp_width, temp_height);
vendor = (const char*)glGetString(GL_VENDOR);
renderer = (const char*)glGetString(GL_RENDERER);
version = (const char*)glGetString(GL_VERSION);
extensions = (const char*)glGetString(GL_EXTENSIONS);
if (!string_is_empty(version))
sscanf(version, "%d.%d", &gl1->version_major, &gl1->version_minor);
if (!string_is_empty(extensions))
gl1->extensions = string_split(extensions, " ");
RARCH_LOG("[GL1]: Vendor: %s, Renderer: %s.\n", vendor, renderer);
RARCH_LOG("[GL1]: Version: %s.\n", version);
RARCH_LOG("[GL1]: Extensions: %s\n", extensions);
{
char device_str[128];
device_str[0] = '\0';
if (!string_is_empty(vendor))
{
size_t len = strlcpy(device_str, vendor, sizeof(device_str));
device_str[len ] = ' ';
device_str[len+1] = '\0';
}
if (!string_is_empty(renderer))
strlcat(device_str, renderer, sizeof(device_str));
video_driver_set_gpu_device_string(device_str);
if (!string_is_empty(version))
video_driver_set_gpu_api_version_string(version);
}
if (gl1->ctx_driver->input_driver)
{
const char *joypad_name = settings->arrays.input_joypad_driver;
gl1->ctx_driver->input_driver(
gl1->ctx_data, joypad_name,
input, input_data);
}
if (video_font_enable)
font_driver_init_osd(gl1,
video,
false,
video->is_threaded,
FONT_DRIVER_RENDER_OPENGL1_API);
gl1->smooth = video_smooth;
gl1->supports_bgra = string_list_find_elem(gl1->extensions, "GL_EXT_bgra");
glDisable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glDisable(GL_STENCIL_TEST);
glDisable(GL_SCISSOR_TEST);
#ifndef VITA
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
#endif
glGenTextures(1, &gl1->tex);
glGenTextures(1, &gl1->menu_tex);
hwr = video_driver_get_hw_context();
memcpy(gl1->tex_info.coord, gl1_tex_coords, sizeof(gl1->tex_info.coord));
gl1->vertex_ptr = hwr->bottom_left_origin
? gl1_vertexes : gl1_vertexes_flipped;
gl1->textures = 4;
gl1->white_color_ptr = gl1_white_color;
gl1->coords.vertex = gl1->vertex_ptr;
gl1->coords.tex_coord = gl1->tex_info.coord;
gl1->coords.color = gl1->white_color_ptr;
gl1->coords.lut_tex_coord = gl1_tex_coords;
gl1->coords.vertices = 4;
RARCH_LOG("[GL1]: Init complete.\n");
return gl1;
error:
video_context_driver_free();
if (gl1)
{
if (gl1->extensions)
string_list_free(gl1->extensions);
free(gl1);
}
return NULL;
}
static void gl1_set_projection(gl1_t *gl1,
struct video_ortho *ortho, bool allow_rotate)
{
static math_matrix_4x4 rot = {
{ 0.0f, 0.0f, 0.0f, 0.0f ,
0.0f, 0.0f, 0.0f, 0.0f ,
0.0f, 0.0f, 0.0f, 0.0f ,
0.0f, 0.0f, 0.0f, 1.0f }
};
float radians, cosine, sine;
/* Calculate projection. */
matrix_4x4_ortho(gl1->mvp_no_rot, ortho->left, ortho->right,
ortho->bottom, ortho->top, ortho->znear, ortho->zfar);
if (!allow_rotate)
{
gl1->mvp = gl1->mvp_no_rot;
return;
}
radians = M_PI * gl1->rotation / 180.0f;
cosine = cosf(radians);
sine = sinf(radians);
MAT_ELEM_4X4(rot, 0, 0) = cosine;
MAT_ELEM_4X4(rot, 0, 1) = -sine;
MAT_ELEM_4X4(rot, 1, 0) = sine;
MAT_ELEM_4X4(rot, 1, 1) = cosine;
matrix_4x4_multiply(gl1->mvp, rot, gl1->mvp_no_rot);
}
void gl1_gfx_set_viewport(gl1_t *gl1,
unsigned viewport_width,
unsigned viewport_height,
bool force_full, bool allow_rotate)
{
settings_t *settings = config_get_ptr();
unsigned height = gl1->video_height;
int x = 0;
int y = 0;
float device_aspect = (float)viewport_width / viewport_height;
if (gl1->ctx_driver->translate_aspect)
device_aspect = gl1->ctx_driver->translate_aspect(
gl1->ctx_data, viewport_width, viewport_height);
if (settings->bools.video_scale_integer && !force_full)
{
video_viewport_get_scaled_integer(&gl1->vp,
viewport_width, viewport_height,
video_driver_get_aspect_ratio(), gl1->keep_aspect);
viewport_width = gl1->vp.width;
viewport_height = gl1->vp.height;
}
else if (gl1->keep_aspect && !force_full)
{
float desired_aspect = video_driver_get_aspect_ratio();
#if defined(HAVE_MENU)
if (settings->uints.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);
}
}
gl1->vp.x = x;
gl1->vp.y = y;
gl1->vp.width = viewport_width;
gl1->vp.height = viewport_height;
}
else
{
gl1->vp.x = gl1->vp.y = 0;
gl1->vp.width = viewport_width;
gl1->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)
gl1->vp.y *= 2;
#endif
glViewport(gl1->vp.x, gl1->vp.y, gl1->vp.width, gl1->vp.height);
gl1_set_projection(gl1, &gl1_default_ortho, allow_rotate);
/* Set last backbuffer viewport. */
if (!force_full)
{
gl1->vp_out_width = viewport_width;
gl1->vp_out_height = viewport_height;
}
#if 0
RARCH_LOG("Setting viewport @ %ux%u\n", viewport_width, viewport_height);
#endif
}
static void draw_tex(gl1_t *gl1, int pot_width, int pot_height, int width, int height, GLuint tex, const void *frame_to_copy)
{
uint8_t *frame = NULL;
uint8_t *frame_rgba = NULL;
/* FIXME: For now, everything is uploaded as BGRA8888, I could not get 444 or 555 to work, and there is no 565 support in GL 1.1 either. */
GLint internalFormat = GL_RGB8;
#ifdef MSB_FIRST
bool supports_native = gl1->supports_bgra;
GLenum format = supports_native ? GL_BGRA_EXT : GL_RGBA;
GLenum type = supports_native ? GL_UNSIGNED_INT_8_8_8_8_REV : GL_UNSIGNED_BYTE;
#elif defined(LSB_FIRST)
bool supports_native = gl1->supports_bgra;
GLenum format = supports_native ? GL_BGRA_EXT : GL_RGBA;
GLenum type = GL_UNSIGNED_BYTE;
#else
#error Broken endianness definition
#endif
float vertices[] = {
-1.0f, -1.0f, 0.0f,
-1.0f, 1.0f, 0.0f,
1.0f, -1.0f, 0.0f,
1.0f, 1.0f, 0.0f,
};
float colors[] = {
1.0f, 1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f
};
float norm_width = (1.0f / (float)pot_width) * (float)width;
float norm_height = (1.0f / (float)pot_height) * (float)height;
float texcoords[] = {
0.0f, 0.0f,
0.0f, 0.0f,
0.0f, 0.0f,
0.0f, 0.0f
};
texcoords[1] = texcoords[5] = norm_height;
texcoords[4] = texcoords[6] = norm_width;
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glDisable(GL_STENCIL_TEST);
glDisable(GL_SCISSOR_TEST);
glEnable(GL_TEXTURE_2D);
/* Multi-texture not part of GL 1.1 */
/*glActiveTexture(GL_TEXTURE0);*/
#ifndef VITA
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_UNPACK_ROW_LENGTH, pot_width);
#endif
glBindTexture(GL_TEXTURE_2D, tex);
frame = (uint8_t*)frame_to_copy;
if (!supports_native)
{
frame_rgba = (uint8_t*)malloc(pot_width * pot_height * 4);
if (frame_rgba)
{
int x, y;
for (y = 0; y < pot_height; y++)
{
for (x = 0; x < pot_width; x++)
{
int index = (y * pot_width + x) * 4;
#ifdef MSB_FIRST
frame_rgba[index + 2] = frame[index + 3];
frame_rgba[index + 1] = frame[index + 2];
frame_rgba[index + 0] = frame[index + 1];
frame_rgba[index + 3] = frame[index + 0];
#else
frame_rgba[index + 2] = frame[index + 0];
frame_rgba[index + 1] = frame[index + 1];
frame_rgba[index + 0] = frame[index + 2];
frame_rgba[index + 3] = frame[index + 3];
#endif
}
}
frame = frame_rgba;
}
}
glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, pot_width, pot_height, 0, format, type, frame);
if (frame_rgba)
free(frame_rgba);
if (tex == gl1->tex)
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, (gl1->smooth ? GL_LINEAR : GL_NEAREST));
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, (gl1->smooth ? GL_LINEAR : GL_NEAREST));
}
else if (tex == gl1->menu_tex)
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, (gl1->menu_smooth ? GL_LINEAR : GL_NEAREST));
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, (gl1->menu_smooth ? GL_LINEAR : GL_NEAREST));
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
if (gl1->rotation && tex == gl1->tex)
glRotatef(gl1->rotation, 0.0f, 0.0f, 1.0f);
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glColorPointer(4, GL_FLOAT, 0, colors);
glVertexPointer(3, GL_FLOAT, 0, vertices);
glTexCoordPointer(2, GL_FLOAT, 0, texcoords);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
}
static void gl1_readback(
gl1_t *gl1,
unsigned alignment,
unsigned fmt, unsigned type,
void *src)
{
#ifndef VITA
glPixelStorei(GL_PACK_ALIGNMENT, alignment);
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
glReadBuffer(GL_BACK);
#endif
glReadPixels(gl1->vp.x, gl1->vp.y,
gl1->vp.width, gl1->vp.height,
(GLenum)fmt, (GLenum)type, (GLvoid*)src);
}
static bool gl1_gfx_frame(void *data, const void *frame,
unsigned frame_width, unsigned frame_height, uint64_t frame_count,
unsigned pitch, const char *msg, video_frame_info_t *video_info)
{
const void *frame_to_copy = NULL;
unsigned mode_width = 0;
unsigned mode_height = 0;
unsigned width = video_info->width;
unsigned height = video_info->height;
bool draw = true;
bool do_swap = false;
gl1_t *gl1 = (gl1_t*)data;
unsigned bits = gl1->video_bits;
unsigned pot_width = 0;
unsigned pot_height = 0;
unsigned video_width = video_info->width;
unsigned video_height = video_info->height;
#ifdef HAVE_MENU
bool menu_is_alive = video_info->menu_is_alive;
#endif
#ifdef HAVE_GFX_WIDGETS
bool widgets_active = video_info->widgets_active;
#endif
bool hard_sync = video_info->hard_sync;
struct font_params *osd_params = (struct font_params*)
&video_info->osd_stat_params;
bool overlay_behind_menu = video_info->overlay_behind_menu;
/* FIXME: Force these settings off as they interfere with the rendering */
video_info->xmb_shadows_enable = false;
video_info->menu_shader_pipeline = 0;
gl1_context_bind_hw_render(gl1, false);
if (gl1->should_resize)
{
gfx_ctx_mode_t mode;
gl1->should_resize = false;
mode.width = width;
mode.height = height;
if (gl1->ctx_driver->set_resize)
gl1->ctx_driver->set_resize(gl1->ctx_data,
mode.width, mode.height);
gl1_gfx_set_viewport(gl1,
video_width, video_height, false, true);
}
if ( !frame || frame == RETRO_HW_FRAME_BUFFER_VALID || (
frame_width == 4 &&
frame_height == 4 &&
(frame_width < width && frame_height < height))
)
draw = false;
do_swap = frame || draw;
if ( gl1->video_width != frame_width ||
gl1->video_height != frame_height ||
gl1->video_pitch != pitch)
{
if (frame_width > 4 && frame_height > 4)
{
gl1->video_width = frame_width;
gl1->video_height = frame_height;
gl1->video_pitch = pitch;
pot_width = get_pot(frame_width);
pot_height = get_pot(frame_height);
if (draw)
{
if (gl1->video_buf)
free(gl1->video_buf);
gl1->video_buf = (unsigned char*)malloc(pot_width * pot_height * 4);
}
}
}
width = gl1->video_width;
height = gl1->video_height;
pitch = gl1->video_pitch;
pot_width = get_pot(width);
pot_height = get_pot(height);
if (draw && gl1->video_buf)
{
if (bits == 32)
{
unsigned y;
/* copy lines into top-left portion of larger (power-of-two) buffer */
for (y = 0; y < height; y++)
memcpy(gl1->video_buf + ((pot_width * (bits / 8)) * y), (const unsigned char*)frame + (pitch * y), width * (bits / 8));
}
else if (bits == 16)
conv_rgb565_argb8888(gl1->video_buf, frame, width, height, pot_width * sizeof(unsigned), pitch);
frame_to_copy = gl1->video_buf;
}
if (gl1->video_width != width || gl1->video_height != height)
{
gl1->video_width = width;
gl1->video_height = height;
}
if (gl1->ctx_driver->get_video_size)
gl1->ctx_driver->get_video_size(gl1->ctx_data,
&mode_width, &mode_height);
gl1->screen_width = mode_width;
gl1->screen_height = mode_height;
if (draw)
{
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
if (frame_to_copy)
draw_tex(gl1, pot_width, pot_height,
width, height, gl1->tex, frame_to_copy);
}
#ifdef HAVE_MENU
if (gl1->menu_frame && menu_is_alive)
{
frame_to_copy = NULL;
width = gl1->menu_width;
height = gl1->menu_height;
pitch = gl1->menu_pitch;
bits = gl1->menu_bits;
pot_width = get_pot(width);
pot_height = get_pot(height);
do_swap = true;
if (gl1->menu_size_changed)
{
gl1->menu_size_changed = false;
if (gl1->menu_video_buf)
free(gl1->menu_video_buf);
gl1->menu_video_buf = NULL;
}
if (!gl1->menu_video_buf)
gl1->menu_video_buf = (unsigned char*)
malloc(pot_width * pot_height * 4);
if (bits == 16 && gl1->menu_video_buf)
{
conv_rgba4444_argb8888(gl1->menu_video_buf,
gl1->menu_frame, width, height,
pot_width * sizeof(unsigned), pitch);
frame_to_copy = gl1->menu_video_buf;
if (gl1->menu_texture_full_screen)
{
glViewport(0, 0, video_width, video_height);
draw_tex(gl1, pot_width, pot_height,
width, height, gl1->menu_tex, frame_to_copy);
glViewport(gl1->vp.x, gl1->vp.y, gl1->vp.width, gl1->vp.height);
}
else
draw_tex(gl1, pot_width, pot_height,
width, height, gl1->menu_tex, frame_to_copy);
}
}
#ifdef HAVE_OVERLAY
if (gl1->overlay_enable && overlay_behind_menu)
gl1_render_overlay(gl1, video_width, video_height);
#endif
if (gl1->menu_texture_enable){
do_swap = true;
#ifdef VITA
glUseProgram(0);
bool enabled = glIsEnabled(GL_DEPTH_TEST);
if(enabled)
glDisable(GL_DEPTH_TEST);
#endif
menu_driver_frame(menu_is_alive, video_info);
#ifdef VITA
if(enabled)
glEnable(GL_DEPTH_TEST);
#endif
}
else
#endif
if (video_info->statistics_show)
{
if (osd_params)
{
font_driver_render_msg(gl1, video_info->stat_text,
osd_params, NULL);
#if 0
osd_params->y = 0.350f;
osd_params->scale = 0.75f;
font_driver_render_msg(gl1, video_info->chat_text,
(const struct font_params*)&video_info->osd_stat_params, NULL);
#endif
}
}
#ifdef HAVE_GFX_WIDGETS
if (widgets_active)
gfx_widgets_frame(video_info);
#endif
#ifdef HAVE_OVERLAY
if (gl1->overlay_enable && !overlay_behind_menu)
gl1_render_overlay(gl1, video_width, video_height);
#endif
if (msg)
font_driver_render_msg(gl1, msg, NULL, NULL);
if (gl1->ctx_driver->update_window_title)
gl1->ctx_driver->update_window_title(
gl1->ctx_data);
/* Screenshots. */
if (gl1->readback_buffer_screenshot)
gl1_readback(gl1,
4, GL_RGBA,
#ifdef MSB_FIRST
GL_UNSIGNED_INT_8_8_8_8_REV,
#else
GL_UNSIGNED_BYTE,
#endif
gl1->readback_buffer_screenshot);
if (do_swap && gl1->ctx_driver->swap_buffers)
gl1->ctx_driver->swap_buffers(gl1->ctx_data);
/* Emscripten has to do black frame insertion in its main loop */
#ifndef EMSCRIPTEN
/* Disable BFI during fast forward, slow-motion,
* and pause to prevent flicker. */
if (
video_info->black_frame_insertion
&& !video_info->input_driver_nonblock_state
&& !video_info->runloop_is_slowmotion
&& !video_info->runloop_is_paused
&& !gl1->menu_texture_enable)
{
unsigned n;
for (n = 0; n < video_info->black_frame_insertion; ++n)
{
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
if (gl1->ctx_driver->swap_buffers)
gl1->ctx_driver->swap_buffers(gl1->ctx_data);
}
}
#endif
/* check if we are fast forwarding or in menu,
if we are ignore hard sync */
if ( hard_sync
&& !video_info->input_driver_nonblock_state
)
{
glClear(GL_COLOR_BUFFER_BIT);
glFinish();
}
if (draw)
{
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
}
gl1_context_bind_hw_render(gl1, true);
return true;
}
static void gl1_gfx_set_nonblock_state(void *data, bool state,
bool adaptive_vsync_enabled,
unsigned swap_interval)
{
int interval = 0;
gl1_t *gl1 = (gl1_t*)data;
if (!gl1)
return;
gl1_context_bind_hw_render(gl1, false);
if (!state)
interval = swap_interval;
if (gl1->ctx_driver->swap_interval)
{
if (adaptive_vsync_enabled && interval == 1)
interval = -1;
gl1->ctx_driver->swap_interval(gl1->ctx_data, interval);
}
gl1_context_bind_hw_render(gl1, true);
}
static bool gl1_gfx_alive(void *data)
{
unsigned temp_width = 0;
unsigned temp_height = 0;
bool quit = false;
bool resize = false;
bool ret = false;
gl1_t *gl1 = (gl1_t*)data;
/* Needed because some context drivers don't track their sizes */
video_driver_get_size(&temp_width, &temp_height);
gl1->ctx_driver->check_window(gl1->ctx_data,
&quit, &resize, &temp_width, &temp_height);
if (resize)
gl1->should_resize = true;
ret = !quit;
if (temp_width != 0 && temp_height != 0)
video_driver_set_size(temp_width, temp_height);
return ret;
}
static bool gl1_gfx_focus(void *data)
{
gl1_t *gl = (gl1_t*)data;
if (gl && gl->ctx_driver && gl->ctx_driver->has_focus)
return gl->ctx_driver->has_focus(gl->ctx_data);
return true;
}
static bool gl1_gfx_suppress_screensaver(void *data, bool enable)
{
(void)data;
(void)enable;
return false;
}
static void gl1_gfx_free(void *data)
{
gl1_t *gl1 = (gl1_t*)data;
if (!gl1)
return;
gl1_context_bind_hw_render(gl1, false);
if (gl1->menu_frame)
free(gl1->menu_frame);
gl1->menu_frame = NULL;
if (gl1->video_buf)
free(gl1->video_buf);
gl1->video_buf = NULL;
if (gl1->menu_video_buf)
free(gl1->menu_video_buf);
gl1->menu_video_buf = NULL;
if (gl1->tex)
{
glDeleteTextures(1, &gl1->tex);
gl1->tex = 0;
}
if (gl1->menu_tex)
{
glDeleteTextures(1, &gl1->menu_tex);
gl1->menu_tex = 0;
}
#ifdef HAVE_OVERLAY
gl1_free_overlay(gl1);
#endif
if (gl1->extensions)
string_list_free(gl1->extensions);
gl1->extensions = NULL;
font_driver_free_osd();
if (gl1->ctx_driver && gl1->ctx_driver->destroy)
gl1->ctx_driver->destroy(gl1->ctx_data);
video_context_driver_free();
free(gl1);
}
static bool gl1_gfx_set_shader(void *data,
enum rarch_shader_type type, const char *path)
{
(void)data;
(void)type;
(void)path;
return false;
}
static void gl1_gfx_set_rotation(void *data,
unsigned rotation)
{
gl1_t *gl1 = (gl1_t*)data;
if (!gl1)
return;
gl1->rotation = 90 * rotation;
gl1_set_projection(gl1, &gl1_default_ortho, true);
}
static void gl1_gfx_viewport_info(void *data,
struct video_viewport *vp)
{
unsigned width, height;
unsigned top_y, top_dist;
gl1_t *gl1 = (gl1_t*)data;
video_driver_get_size(&width, &height);
*vp = gl1->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 gl1_gfx_read_viewport(void *data, uint8_t *buffer, bool is_idle)
{
unsigned num_pixels = 0;
gl1_t *gl1 = (gl1_t*)data;
if (!gl1)
return false;
gl1_context_bind_hw_render(gl1, false);
num_pixels = gl1->vp.width * gl1->vp.height;
gl1->readback_buffer_screenshot = malloc(num_pixels * sizeof(uint32_t));
if (!gl1->readback_buffer_screenshot)
goto error;
if (!is_idle)
video_driver_cached_frame();
video_frame_convert_rgba_to_bgr(
(const void*)gl1->readback_buffer_screenshot,
buffer,
num_pixels);
free(gl1->readback_buffer_screenshot);
gl1->readback_buffer_screenshot = NULL;
gl1_context_bind_hw_render(gl1, true);
return true;
error:
gl1_context_bind_hw_render(gl1, true);
return false;
}
static void gl1_set_texture_frame(void *data,
const void *frame, bool rgb32, unsigned width, unsigned height,
float alpha)
{
settings_t *settings = config_get_ptr();
bool menu_linear_filter = settings->bools.menu_linear_filter;
unsigned pitch = width * 2;
gl1_t *gl1 = (gl1_t*)data;
if (!gl1)
return;
gl1->menu_smooth = menu_linear_filter;
gl1_context_bind_hw_render(gl1, false);
if (rgb32)
pitch = width * 4;
if (gl1->menu_frame)
free(gl1->menu_frame);
gl1->menu_frame = NULL;
if ( !gl1->menu_frame ||
gl1->menu_width != width ||
gl1->menu_height != height ||
gl1->menu_pitch != pitch)
{
if (pitch && height)
{
if (gl1->menu_frame)
free(gl1->menu_frame);
/* FIXME? We have to assume the pitch has no
* extra padding in it because that will
* mess up the POT calculation when we don't
* know how many bpp there are. */
gl1->menu_frame = (unsigned char*)malloc(pitch * height);
}
}
if (gl1->menu_frame && frame && pitch && height)
{
memcpy(gl1->menu_frame, frame, pitch * height);
gl1->menu_width = width;
gl1->menu_height = height;
gl1->menu_pitch = pitch;
gl1->menu_bits = rgb32 ? 32 : 16;
gl1->menu_size_changed = true;
}
gl1_context_bind_hw_render(gl1, true);
}
static void gl1_get_video_output_size(void *data,
unsigned *width, unsigned *height, char *desc, size_t desc_len)
{
gl1_t *gl = (gl1_t*)data;
if (!gl || !gl->ctx_driver || !gl->ctx_driver->get_video_output_size)
return;
gl->ctx_driver->get_video_output_size(
gl->ctx_data,
width, height, desc, desc_len);
}
static void gl1_get_video_output_prev(void *data)
{
gl1_t *gl = (gl1_t*)data;
if (!gl || !gl->ctx_driver || !gl->ctx_driver->get_video_output_prev)
return;
gl->ctx_driver->get_video_output_prev(gl->ctx_data);
}
static void gl1_get_video_output_next(void *data)
{
gl1_t *gl = (gl1_t*)data;
if (!gl || !gl->ctx_driver || !gl->ctx_driver->get_video_output_next)
return;
gl->ctx_driver->get_video_output_next(gl->ctx_data);
}
static void gl1_set_video_mode(void *data, unsigned width, unsigned height,
bool fullscreen)
{
gl1_t *gl = (gl1_t*)data;
if (gl->ctx_driver->set_video_mode)
gl->ctx_driver->set_video_mode(gl->ctx_data,
width, height, fullscreen);
}
static unsigned gl1_wrap_type_to_enum(enum gfx_wrap_type type)
{
switch (type)
{
case RARCH_WRAP_REPEAT:
case RARCH_WRAP_MIRRORED_REPEAT: /* mirrored not actually supported */
return GL_REPEAT;
default:
return GL_CLAMP;
}
return 0;
}
static void gl1_load_texture_data(
GLuint id,
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 use_rgba = video_driver_supports_rgba();
bool rgb32 = (base_size == (sizeof(uint32_t)));
GLenum wrap = gl1_wrap_type_to_enum(wrap_type);
/* GL1.x does not have mipmapping support. */
switch (filter_type)
{
case TEXTURE_FILTER_MIPMAP_NEAREST:
case TEXTURE_FILTER_NEAREST:
min_filter = GL_NEAREST;
mag_filter = GL_NEAREST;
break;
case TEXTURE_FILTER_MIPMAP_LINEAR:
case TEXTURE_FILTER_LINEAR:
default:
min_filter = GL_LINEAR;
mag_filter = GL_LINEAR;
break;
}
gl1_bind_texture(id, wrap, mag_filter, min_filter);
#ifndef VITA
glPixelStorei(GL_UNPACK_ALIGNMENT, alignment);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
#endif
glTexImage2D(GL_TEXTURE_2D,
0,
(use_rgba || !rgb32) ? GL_RGBA : RARCH_GL1_INTERNAL_FORMAT32,
width, height, 0,
(use_rgba || !rgb32) ? GL_RGBA : RARCH_GL1_TEXTURE_TYPE32,
#ifdef MSB_FIRST
GL_UNSIGNED_INT_8_8_8_8_REV,
#else
(rgb32) ? RARCH_GL1_FORMAT32 : GL_UNSIGNED_BYTE,
#endif
frame);
}
static void video_texture_load_gl1(
struct texture_image *ti,
enum texture_filter_type filter_type,
uintptr_t *idptr)
{
GLuint id;
unsigned width = 0;
unsigned height = 0;
const void *pixels = NULL;
/* Generate the OpenGL texture object */
glGenTextures(1, &id);
*idptr = id;
if (ti)
{
width = ti->width;
height = ti->height;
pixels = ti->pixels;
}
gl1_load_texture_data(id,
RARCH_WRAP_EDGE, filter_type,
4 /* TODO/FIXME - dehardcode */,
width, height, pixels,
sizeof(uint32_t) /* TODO/FIXME - dehardcode */
);
}
#ifdef HAVE_THREADS
static int video_texture_load_wrap_gl1(void *data)
{
uintptr_t id = 0;
if (!data)
return 0;
video_texture_load_gl1((struct texture_image*)data,
TEXTURE_FILTER_NEAREST, &id);
return (int)id;
}
#endif
static uintptr_t gl1_load_texture(void *video_data, void *data,
bool threaded, enum texture_filter_type filter_type)
{
uintptr_t id = 0;
#ifdef HAVE_THREADS
if (threaded)
{
gl1_t *gl1 = (gl1_t*)video_data;
custom_command_method_t func = video_texture_load_wrap_gl1;
if (gl1->ctx_driver->make_current)
gl1->ctx_driver->make_current(false);
return video_thread_texture_load(data, func);
}
#endif
video_texture_load_gl1((struct texture_image*)data, filter_type, &id);
return id;
}
static void gl1_set_aspect_ratio(void *data, unsigned aspect_ratio_idx)
{
gl1_t *gl1 = (gl1_t*)data;
if (!gl1)
return;
gl1->keep_aspect = true;
gl1->should_resize = true;
}
static void gl1_unload_texture(void *data,
bool threaded, uintptr_t id)
{
GLuint glid;
gl1_t *gl1 = (gl1_t*)data;
if (!id)
return;
#ifdef HAVE_THREADS
if (threaded)
{
if (gl1->ctx_driver->make_current)
gl1->ctx_driver->make_current(false);
}
#endif
glid = (GLuint)id;
glDeleteTextures(1, &glid);
}
static float gl1_get_refresh_rate(void *data)
{
float refresh_rate = 0.0f;
if (video_context_driver_get_refresh_rate(&refresh_rate))
return refresh_rate;
return 0.0f;
}
static void gl1_set_texture_enable(void *data, bool state, bool full_screen)
{
gl1_t *gl1 = (gl1_t*)data;
if (!gl1)
return;
gl1->menu_texture_enable = state;
gl1->menu_texture_full_screen = full_screen;
}
static uint32_t gl1_get_flags(void *data)
{
uint32_t flags = 0;
BIT32_SET(flags, GFX_CTX_FLAGS_HARD_SYNC);
BIT32_SET(flags, GFX_CTX_FLAGS_BLACK_FRAME_INSERTION);
BIT32_SET(flags, GFX_CTX_FLAGS_MENU_FRAME_FILTERING);
BIT32_SET(flags, GFX_CTX_FLAGS_OVERLAY_BEHIND_MENU_SUPPORTED);
return flags;
}
static const video_poke_interface_t gl1_poke_interface = {
gl1_get_flags,
gl1_load_texture,
gl1_unload_texture,
gl1_set_video_mode,
gl1_get_refresh_rate,
NULL,
gl1_get_video_output_size,
gl1_get_video_output_prev,
gl1_get_video_output_next,
NULL,
NULL,
gl1_set_aspect_ratio,
NULL,
gl1_set_texture_frame,
gl1_set_texture_enable,
font_driver_render_msg,
NULL,
NULL, /* grab_mouse_toggle */
NULL, /* get_current_shader */
NULL, /* get_current_software_framebuffer */
NULL, /* get_hw_render_interface */
NULL, /* set_hdr_max_nits */
NULL, /* set_hdr_paper_white_nits */
NULL, /* set_hdr_contrast */
NULL /* set_hdr_expand_gamut */
};
static void gl1_gfx_get_poke_interface(void *data,
const video_poke_interface_t **iface)
{
(void)data;
*iface = &gl1_poke_interface;
}
#ifdef HAVE_GFX_WIDGETS
static bool gl1_gfx_widgets_enabled(void *data)
{
(void)data;
return true;
}
#endif
static void gl1_gfx_set_viewport_wrapper(void *data, unsigned viewport_width,
unsigned viewport_height, bool force_full, bool allow_rotate)
{
gl1_t *gl1 = (gl1_t*)data;
gl1_gfx_set_viewport(gl1,
viewport_width, viewport_height, force_full, allow_rotate);
}
#ifdef HAVE_OVERLAY
static unsigned gl1_get_alignment(unsigned pitch)
{
if (pitch & 1)
return 1;
if (pitch & 2)
return 2;
if (pitch & 4)
return 4;
return 8;
}
static bool gl1_overlay_load(void *data,
const void *image_data, unsigned num_images)
{
unsigned i, j;
gl1_t *gl = (gl1_t*)data;
const struct texture_image *images =
(const struct texture_image*)image_data;
if (!gl)
return false;
gl1_context_bind_hw_render(gl, false);
gl1_free_overlay(gl);
gl->overlay_tex = (GLuint*)
calloc(num_images, sizeof(*gl->overlay_tex));
if (!gl->overlay_tex)
{
gl1_context_bind_hw_render(gl, 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 = gl1_get_alignment(images[i].width
* sizeof(uint32_t));
gl1_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. */
gl1_overlay_tex_geom(gl, i, 0, 0, 1, 1);
gl1_overlay_vertex_geom(gl, i, 0, 0, 1, 1);
for (j = 0; j < 16; j++)
gl->overlay_color_coord[16 * i + j] = 1.0f;
}
gl1_context_bind_hw_render(gl, true);
return true;
}
static void gl1_overlay_enable(void *data, bool state)
{
gl1_t *gl = (gl1_t*)data;
if (!gl)
return;
gl->overlay_enable = state;
if (gl->fullscreen && gl->ctx_driver->show_mouse)
gl->ctx_driver->show_mouse(gl->ctx_data, state);
}
static void gl1_overlay_full_screen(void *data, bool enable)
{
gl1_t *gl = (gl1_t*)data;
if (gl)
gl->overlay_full_screen = enable;
}
static void gl1_overlay_set_alpha(void *data, unsigned image, float mod)
{
GLfloat *color = NULL;
gl1_t *gl = (gl1_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 gl1_overlay_interface = {
gl1_overlay_enable,
gl1_overlay_load,
gl1_overlay_tex_geom,
gl1_overlay_vertex_geom,
gl1_overlay_full_screen,
gl1_overlay_set_alpha,
};
static void gl1_get_overlay_interface(void *data,
const video_overlay_interface_t **iface)
{
(void)data;
*iface = &gl1_overlay_interface;
}
#endif
static bool gl1_has_windowed(void *data)
{
gl1_t *gl = (gl1_t*)data;
if (gl && gl->ctx_driver)
return gl->ctx_driver->has_windowed;
return false;
}
video_driver_t video_gl1 = {
gl1_gfx_init,
gl1_gfx_frame,
gl1_gfx_set_nonblock_state,
gl1_gfx_alive,
gl1_gfx_focus,
gl1_gfx_suppress_screensaver,
gl1_has_windowed,
gl1_gfx_set_shader,
gl1_gfx_free,
"gl1",
gl1_gfx_set_viewport_wrapper,
gl1_gfx_set_rotation,
gl1_gfx_viewport_info,
gl1_gfx_read_viewport,
NULL, /* read_frame_raw */
#ifdef HAVE_OVERLAY
gl1_get_overlay_interface,
#endif
#ifdef HAVE_VIDEO_LAYOUT
NULL,
#endif
gl1_gfx_get_poke_interface,
gl1_wrap_type_to_enum,
#ifdef HAVE_GFX_WIDGETS
gl1_gfx_widgets_enabled
#endif
};
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