RetroArch/gfx/drivers/vg.c
2016-09-15 21:16:25 +02:00

527 lines
14 KiB
C

/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* 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/>.
*/
#include <math.h>
#include <string.h>
#include <VG/openvg.h>
#include <VG/vgext.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <retro_inline.h>
#include <retro_assert.h>
#include <gfx/math/matrix_3x3.h>
#include <libretro.h>
#ifdef HAVE_CONFIG_H
#include "../../config.h"
#endif
#include "../video_context_driver.h"
#include "../../retroarch.h"
#include "../../runloop.h"
#include "../../driver.h"
#include "../../performance_counters.h"
#include "../font_driver.h"
#include "../../content.h"
#include "../../runloop.h"
#include "../../verbosity.h"
#include "../../configuration.h"
typedef struct
{
bool should_resize;
float mScreenAspect;
bool keep_aspect;
bool mEglImageBuf;
unsigned mTextureWidth;
unsigned mTextureHeight;
unsigned mRenderWidth;
unsigned mRenderHeight;
unsigned x1, y1, x2, y2;
VGImageFormat mTexType;
VGImage mImage;
math_matrix_3x3 mTransformMatrix;
VGint scissor[4];
EGLImageKHR last_egl_image;
char *mLastMsg;
uint32_t mFontHeight;
VGFont mFont;
void *mFontRenderer;
const font_renderer_driver_t *font_driver;
bool mFontsOn;
VGuint mMsgLength;
VGuint mGlyphIndices[1024];
VGPaint mPaintFg;
VGPaint mPaintBg;
} vg_t;
static PFNVGCREATEEGLIMAGETARGETKHRPROC pvgCreateEGLImageTargetKHR;
static void vg_set_nonblock_state(void *data, bool state)
{
unsigned interval = state ? 0 : 1;
video_context_driver_swap_interval(&interval);
}
static INLINE bool vg_query_extension(const char *ext)
{
const char *str = (const char*)vgGetString(VG_EXTENSIONS);
bool ret = str && strstr(str, ext);
RARCH_LOG("Querying VG extension: %s => %s\n",
ext, ret ? "exists" : "doesn't exist");
return ret;
}
static void *vg_init(const video_info_t *video,
const input_driver_t **input, void **input_data)
{
gfx_ctx_mode_t mode;
gfx_ctx_input_t inp;
gfx_ctx_aspect_t aspect_data;
unsigned interval;
unsigned temp_width = 0, temp_height = 0;
VGfloat clearColor[4] = {0, 0, 0, 1};
settings_t *settings = config_get_ptr();
vg_t *vg = (vg_t*)calloc(1, sizeof(vg_t));
const gfx_ctx_driver_t *ctx = video_context_driver_init_first(
vg, settings->video.context_driver,
GFX_CTX_OPENVG_API, 0, 0, false);
if (!vg || !ctx)
goto error;
video_context_driver_set((void*)ctx);
video_context_driver_get_video_size(&mode);
temp_width = mode.width;
temp_height = mode.height;
mode.width = 0;
mode.height = 0;
RARCH_LOG("Detecting screen resolution %ux%u.\n", temp_width, temp_height);
if (temp_width != 0 && temp_height != 0)
video_driver_set_size(&temp_width, &temp_height);
interval = video->vsync ? 1 : 0;
video_context_driver_swap_interval(&interval);
video_context_driver_update_window_title();
vg->mTexType = video->rgb32 ? VG_sXRGB_8888 : VG_sRGB_565;
vg->keep_aspect = video->force_aspect;
unsigned win_width = video->width;
unsigned win_height = video->height;
if (video->fullscreen && (win_width == 0) && (win_height == 0))
{
video_driver_get_size(&temp_width, &temp_height);
win_width = temp_width;
win_height = temp_height;
}
mode.width = win_width;
mode.height = win_height;
mode.fullscreen = video->fullscreen;
if (!video_context_driver_set_video_mode(&mode))
goto error;
video_driver_get_size(&temp_width, &temp_height);
temp_width = 0;
temp_height = 0;
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;
vg->should_resize = true;
if (temp_width != 0 && temp_height != 0)
{
RARCH_LOG("Verified window resolution %ux%u.\n", temp_width, temp_height);
video_driver_set_size(&temp_width, &temp_height);
}
video_driver_get_size(&temp_width, &temp_height);
vg->mScreenAspect = (float)temp_width / temp_height;
aspect_data.aspect = &vg->mScreenAspect;
aspect_data.width = temp_width;
aspect_data.height = temp_height;
video_context_driver_translate_aspect(&aspect_data);
vgSetfv(VG_CLEAR_COLOR, 4, clearColor);
vg->mTextureWidth = vg->mTextureHeight = video->input_scale * RARCH_SCALE_BASE;
vg->mImage = vgCreateImage(vg->mTexType, vg->mTextureWidth, vg->mTextureHeight,
video->smooth ? VG_IMAGE_QUALITY_BETTER : VG_IMAGE_QUALITY_NONANTIALIASED);
vg_set_nonblock_state(vg, !video->vsync);
inp.input = input;
inp.input_data = input_data;
video_context_driver_input_driver(&inp);
if ( settings->video.font_enable
&& font_renderer_create_default((const void**)&vg->font_driver, &vg->mFontRenderer,
*settings->path.font ? settings->path.font : NULL, settings->video.font_size))
{
vg->mFont = vgCreateFont(0);
if (vg->mFont != VG_INVALID_HANDLE)
{
vg->mFontsOn = true;
vg->mFontHeight = settings->video.font_size;
vg->mPaintFg = vgCreatePaint();
vg->mPaintBg = vgCreatePaint();
VGfloat paintFg[] = {
settings->video.msg_color_r,
settings->video.msg_color_g,
settings->video.msg_color_b,
1.0f };
VGfloat paintBg[] = {
settings->video.msg_color_r / 2.0f,
settings->video.msg_color_g / 2.0f,
settings->video.msg_color_b / 2.0f,
0.5f };
vgSetParameteri(vg->mPaintFg, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);
vgSetParameterfv(vg->mPaintFg, VG_PAINT_COLOR, 4, paintFg);
vgSetParameteri(vg->mPaintBg, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);
vgSetParameterfv(vg->mPaintBg, VG_PAINT_COLOR, 4, paintBg);
}
}
if (vg_query_extension("KHR_EGL_image")
&& video_context_driver_init_image_buffer((void*)video))
{
gfx_ctx_proc_address_t proc_address;
proc_address.sym = "vgCreateEGLImageTargetKHR";
video_context_driver_get_proc_address(&proc_address);
pvgCreateEGLImageTargetKHR =
(PFNVGCREATEEGLIMAGETARGETKHRPROC)proc_address.addr;
if (pvgCreateEGLImageTargetKHR)
{
RARCH_LOG("[VG] Using EGLImage buffer\n");
vg->mEglImageBuf = true;
}
}
#if 0
const char *ext = (const char*)vgGetString(VG_EXTENSIONS);
if (ext)
RARCH_LOG("[VG] Supported extensions: %s\n", ext);
#endif
return vg;
error:
if (vg)
free(vg);
video_context_driver_destroy();
return NULL;
}
static void vg_free(void *data)
{
vg_t *vg = (vg_t*)data;
if (!vg)
return;
vgDestroyImage(vg->mImage);
if (vg->mFontsOn)
{
vgDestroyFont(vg->mFont);
vg->font_driver->free(vg->mFontRenderer);
vgDestroyPaint(vg->mPaintFg);
vgDestroyPaint(vg->mPaintBg);
}
video_context_driver_free();
free(vg);
}
static void vg_calculate_quad(vg_t *vg)
{
unsigned width, height;
video_driver_get_size(&width, &height);
/* set viewport for aspect ratio, taken from the OpenGL driver. */
if (vg->keep_aspect)
{
float desired_aspect = video_driver_get_aspect_ratio();
/* If the aspect ratios of screen and desired aspect ratio
* are sufficiently equal (floating point stuff),
* assume they are actually equal. */
if (fabs(vg->mScreenAspect - desired_aspect) < 0.0001)
{
vg->x1 = 0;
vg->y1 = 0;
vg->x2 = width;
vg->y2 = height;
}
else if (vg->mScreenAspect > desired_aspect)
{
float delta = (desired_aspect / vg->mScreenAspect - 1.0) / 2.0 + 0.5;
vg->x1 = width * (0.5 - delta);
vg->y1 = 0;
vg->x2 = 2.0 * width * delta + vg->x1;
vg->y2 = height + vg->y1;
}
else
{
float delta = (vg->mScreenAspect / desired_aspect - 1.0) / 2.0 + 0.5;
vg->x1 = 0;
vg->y1 = height * (0.5 - delta);
vg->x2 = width + vg->x1;
vg->y2 = 2.0 * height * delta + vg->y1;
}
}
else
{
vg->x1 = 0;
vg->y1 = 0;
vg->x2 = width;
vg->y2 = height;
}
vg->scissor[0] = vg->x1;
vg->scissor[1] = vg->y1;
vg->scissor[2] = vg->x2 - vg->x1;
vg->scissor[3] = vg->y2 - vg->y1;
vgSetiv(VG_SCISSOR_RECTS, 4, vg->scissor);
}
static void vg_copy_frame(void *data, const void *frame,
unsigned width, unsigned height, unsigned pitch)
{
vg_t *vg = (vg_t*)data;
if (vg->mEglImageBuf)
{
gfx_ctx_image_t img_info;
EGLImageKHR img = 0;
bool new_egl = false;
img_info.frame = frame;
img_info.width = width;
img_info.height = height;
img_info.pitch = pitch;
img_info.rgb32 = (vg->mTexType == VG_sXRGB_8888);
img_info.index = 0;
img_info.handle = &img;
new_egl = video_context_driver_write_to_image_buffer(&img_info);
retro_assert(img != EGL_NO_IMAGE_KHR);
if (new_egl)
{
vgDestroyImage(vg->mImage);
vg->mImage = pvgCreateEGLImageTargetKHR((VGeglImageKHR) img);
if (!vg->mImage)
{
RARCH_ERR(
"[VG:EGLImage] Error creating image: %08x\n",
vgGetError());
exit(2);
}
vg->last_egl_image = img;
}
}
else
vgImageSubData(vg->mImage, frame, pitch, vg->mTexType, 0, 0, width, height);
}
static bool vg_frame(void *data, const void *frame,
unsigned frame_width, unsigned frame_height,
uint64_t frame_count, unsigned pitch, const char *msg)
{
unsigned width, height;
vg_t *vg = (vg_t*)data;
static struct retro_perf_counter vg_fr = {0};
static struct retro_perf_counter vg_image = {0};
performance_counter_init(&vg_fr, "vg_fr");
performance_counter_start(&vg_fr);
video_driver_get_size(&width, &height);
if ( frame_width != vg->mRenderWidth
|| frame_height != vg->mRenderHeight
|| vg->should_resize)
{
vg->mRenderWidth = frame_width;
vg->mRenderHeight = frame_height;
vg_calculate_quad(vg);
matrix_3x3_quad_to_quad(
vg->x1, vg->y1, vg->x2, vg->y1, vg->x2, vg->y2, vg->x1, vg->y2,
/* needs to be flipped, Khronos loves their bottom-left origin */
0, frame_height, frame_width, frame_height, frame_width, 0, 0, 0,
&vg->mTransformMatrix);
vgSeti(VG_MATRIX_MODE, VG_MATRIX_IMAGE_USER_TO_SURFACE);
vgLoadMatrix(vg->mTransformMatrix.data);
vg->should_resize = false;
}
vgSeti(VG_SCISSORING, VG_FALSE);
vgClear(0, 0, width, height);
vgSeti(VG_SCISSORING, VG_TRUE);
performance_counter_init(&vg_image, "vg_image");
performance_counter_start(&vg_image);
vg_copy_frame(vg, frame, frame_width, frame_height, pitch);
performance_counter_stop(&vg_image);
vgDrawImage(vg->mImage);
#if 0
if (msg && vg->mFontsOn)
vg_draw_message(vg, msg);
#endif
video_context_driver_update_window_title();
performance_counter_stop(&vg_fr);
video_context_driver_swap_buffers();
return true;
}
static bool vg_alive(void *data)
{
gfx_ctx_size_t size_data;
bool quit = false;
unsigned temp_width = 0;
unsigned temp_height = 0;
vg_t *vg = (vg_t*)data;
size_data.quit = &quit;
size_data.resize = &vg->should_resize;
size_data.width = &temp_width;
size_data.height = &temp_height;
video_context_driver_check_window(&size_data);
if (temp_width != 0 && temp_height != 0)
video_driver_set_size(&temp_width, &temp_height);
return !quit;
}
static bool vg_focus(void *data)
{
return video_context_driver_focus();
}
static bool vg_suppress_screensaver(void *data, bool enable)
{
bool enabled = enable;
return video_context_driver_suppress_screensaver(&enabled);
}
static bool vg_has_windowed(void *data)
{
return video_context_driver_has_windowed();
}
static bool vg_set_shader(void *data,
enum rarch_shader_type type, const char *path)
{
(void)data;
(void)type;
(void)path;
return false;
}
static void vg_set_rotation(void *data, unsigned rotation)
{
(void)data;
(void)rotation;
}
static void vg_viewport_info(void *data,
struct video_viewport *vp)
{
(void)data;
(void)vp;
}
static bool vg_read_viewport(void *data, uint8_t *buffer)
{
(void)data;
(void)buffer;
return true;
}
static void vg_get_poke_interface(void *data,
const video_poke_interface_t **iface)
{
(void)data;
(void)iface;
}
video_driver_t video_vg = {
vg_init,
vg_frame,
vg_set_nonblock_state,
vg_alive,
vg_focus,
vg_suppress_screensaver,
vg_has_windowed,
vg_set_shader,
vg_free,
"vg",
NULL, /* set_viewport */
vg_set_rotation,
vg_viewport_info,
vg_read_viewport,
NULL, /* read_frame_raw */
#ifdef HAVE_OVERLAY
NULL, /* overlay_interface */
#endif
vg_get_poke_interface
};