# HG changeset patch # User Holmes Futrell # Date 1216337502 0 # Node ID b70b96e615d2d54c38f73a7d1525b17bd9d4d11c # Parent da266ae53b9802e5e26262a90694c5a2d72a6236 These files are the OpenGL ES render driver. You should be able to use them on any platform that supports OpenGL ES -- not just iPhone. The driver is based off the OpenGL render driver. There are a few differences between OpenGL and OpenGL ES that present difficulties for this driver: - OpenGL ES does NOT support many pixel formats (for example, no GL_BGR). Also, when using texture functions format and internalFormat must be the same -- this means 32 bit packed formats like SDL_PIXELFORMAT_BGR888 cannot be automatically converted to GL_RGB (which is 24bpp). - OpenGL ES doesn't have GL_PACK_ROW_LENGTH, which means data must be reformatted before uploading changes to dirty rects. This change has been added. - OpenGL ES doesn't support paletted textures, though there is an extension. I'm looking into this. Some other notable differences: - OpenGL ES has an extension called GL_OES_draw_texture which allows for quicker 2D sprite-type drawing. I use this in GL_RenderCopy when it is available. The iPhone supports the extension, but the iPhone Simulator does not (presently). - No glBegin() / glEnd() and no GL_QUADS! I'm using glDrawArrays with GL_TRIANGLE_STRIP instead! diff -r da266ae53b98 -r b70b96e615d2 src/video/glesrenderer/SDL_renderer_gles.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/glesrenderer/SDL_renderer_gles.c Thu Jul 17 23:31:42 2008 +0000 @@ -0,0 +1,841 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2006 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" + +#if SDL_VIDEO_RENDER_OGL_ES + +#include "SDL_video.h" +#include "SDL_opengles.h" +#include "SDL_sysvideo.h" +#include "SDL_pixels_c.h" +#include "SDL_rect_c.h" +#include "SDL_yuv_sw_c.h" + +/* OpenGL ES 1.1 renderer implementation */ + +static const float inv255f = 1.0f / 255.0f; + +static SDL_Renderer *GL_CreateRenderer(SDL_Window * window, Uint32 flags); +static int GL_ActivateRenderer(SDL_Renderer * renderer); +static int GL_DisplayModeChanged(SDL_Renderer * renderer); +static int GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture); +static int GL_QueryTexturePixels(SDL_Renderer * renderer, + SDL_Texture * texture, void **pixels, + int *pitch); +static int GL_SetTexturePalette(SDL_Renderer * renderer, + SDL_Texture * texture, + const SDL_Color * colors, int firstcolor, + int ncolors); +static int GL_GetTexturePalette(SDL_Renderer * renderer, + SDL_Texture * texture, SDL_Color * colors, + int firstcolor, int ncolors); +static int GL_SetTextureColorMod(SDL_Renderer * renderer, + SDL_Texture * texture); +static int GL_SetTextureAlphaMod(SDL_Renderer * renderer, + SDL_Texture * texture); +static int GL_SetTextureBlendMode(SDL_Renderer * renderer, + SDL_Texture * texture); +static int GL_SetTextureScaleMode(SDL_Renderer * renderer, + SDL_Texture * texture); +static int GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * rect, const void *pixels, + int pitch); +static int GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * rect, int markDirty, void **pixels, + int *pitch); +static void GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture); +static void GL_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture, + int numrects, const SDL_Rect * rects); +static int GL_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b, + Uint8 a, const SDL_Rect * rect); +static int GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * srcrect, const SDL_Rect * dstrect); +static void GL_RenderPresent(SDL_Renderer * renderer); +static void GL_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture); +static void GL_DestroyRenderer(SDL_Renderer * renderer); + + +SDL_RenderDriver GL_ES_RenderDriver = { + GL_CreateRenderer, + { + "opengl_es", + (SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTDISCARD | + SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_ACCELERATED), + (SDL_TEXTUREMODULATE_NONE | SDL_TEXTUREMODULATE_COLOR | + SDL_TEXTUREMODULATE_ALPHA), + (SDL_TEXTUREBLENDMODE_NONE | SDL_TEXTUREBLENDMODE_MASK | + SDL_TEXTUREBLENDMODE_BLEND | SDL_TEXTUREBLENDMODE_ADD | + SDL_TEXTUREBLENDMODE_MOD), + (SDL_TEXTURESCALEMODE_NONE | SDL_TEXTURESCALEMODE_FAST | + SDL_TEXTURESCALEMODE_SLOW), +#ifdef GL_IMG_texture_format_BGRA8888 + 3, +#else + 2, +#endif + { +#ifdef GL_IMG_texture_format_BGRA8888 + SDL_PIXELFORMAT_ARGB8888, +#endif + SDL_PIXELFORMAT_RGB24, + SDL_PIXELFORMAT_ABGR8888, + }, + 0, + 0} +}; + +typedef struct +{ + SDL_GLContext context; + SDL_bool updateSize; + int blendMode; + int scaleMode; + +#ifndef APIENTRY +#define APIENTRY +#endif + + SDL_bool useDrawTexture; + SDL_bool GL_OES_draw_texture_supported; + + /* OpenGL ES functions */ + #define SDL_PROC(ret,func,params) ret (APIENTRY *func) params; + #include "SDL_glesfuncs.h" + #undef SDL_PROC + +} GL_RenderData; + +typedef struct +{ + GLuint texture; + GLenum type; + GLfloat texw; + GLfloat texh; + GLenum format; + GLenum formattype; + void *pixels; + int pitch; + SDL_DirtyRectList dirty; +} GL_TextureData; + +static void +GL_SetError(const char *prefix, GLenum result) +{ + const char *error; + + switch (result) { + case GL_NO_ERROR: + error = "GL_NO_ERROR"; + break; + case GL_INVALID_ENUM: + error = "GL_INVALID_ENUM"; + break; + case GL_INVALID_VALUE: + error = "GL_INVALID_VALUE"; + break; + case GL_INVALID_OPERATION: + error = "GL_INVALID_OPERATION"; + break; + case GL_STACK_OVERFLOW: + error = "GL_STACK_OVERFLOW"; + break; + case GL_STACK_UNDERFLOW: + error = "GL_STACK_UNDERFLOW"; + break; + case GL_OUT_OF_MEMORY: + error = "GL_OUT_OF_MEMORY"; + break; + default: + error = "UNKNOWN"; + break; + } + SDL_SetError("%s: %s", prefix, error); +} + +static int +GL_LoadFunctions(GL_RenderData * data) +{ + + #define SDL_PROC(ret,func,params) \ + data->func = func; + #include "SDL_glesfuncs.h" + #undef SDL_PROC + + return 0; +} + +void +GL_AddRenderDriver(_THIS) +{ + if (_this->GL_CreateContext) { + SDL_AddRenderDriver(0, &GL_ES_RenderDriver); + } +} + +SDL_Renderer * +GL_CreateRenderer(SDL_Window * window, Uint32 flags) +{ + + printf("gl(es) create renderer ...\n"); + + SDL_Renderer *renderer; + GL_RenderData *data; + GLint value; + int doublebuffer; + + if (!(window->flags & SDL_WINDOW_OPENGL)) { + if (SDL_RecreateWindow(window, window->flags | SDL_WINDOW_OPENGL) < 0) { + return NULL; + } + } + + renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer)); + if (!renderer) { + SDL_OutOfMemory(); + return NULL; + } + + data = (GL_RenderData *) SDL_calloc(1, sizeof(*data)); + if (!data) { + GL_DestroyRenderer(renderer); + SDL_OutOfMemory(); + return NULL; + } + + renderer->ActivateRenderer = GL_ActivateRenderer; + renderer->DisplayModeChanged = GL_DisplayModeChanged; + renderer->CreateTexture = GL_CreateTexture; + renderer->QueryTexturePixels = GL_QueryTexturePixels; + renderer->SetTexturePalette = GL_SetTexturePalette; + renderer->GetTexturePalette = GL_GetTexturePalette; + renderer->SetTextureColorMod = GL_SetTextureColorMod; + renderer->SetTextureAlphaMod = GL_SetTextureAlphaMod; + renderer->SetTextureBlendMode = GL_SetTextureBlendMode; + renderer->SetTextureScaleMode = GL_SetTextureScaleMode; + renderer->UpdateTexture = GL_UpdateTexture; + renderer->LockTexture = GL_LockTexture; + renderer->UnlockTexture = GL_UnlockTexture; + renderer->DirtyTexture = GL_DirtyTexture; + renderer->RenderFill = GL_RenderFill; + renderer->RenderCopy = GL_RenderCopy; + renderer->RenderPresent = GL_RenderPresent; + renderer->DestroyTexture = GL_DestroyTexture; + renderer->DestroyRenderer = GL_DestroyRenderer; + renderer->info = GL_ES_RenderDriver.info; + renderer->window = window->id; + renderer->driverdata = data; + + + renderer->info.flags = (SDL_RENDERER_PRESENTDISCARD | SDL_RENDERER_ACCELERATED); + + if (GL_LoadFunctions(data) < 0) { + GL_DestroyRenderer(renderer); + return NULL; + } + + data->context = SDL_GL_CreateContext(window->id); + if (!data->context) { + GL_DestroyRenderer(renderer); + return NULL; + } + if (SDL_GL_MakeCurrent(window->id, data->context) < 0) { + GL_DestroyRenderer(renderer); + return NULL; + } + + if (flags & SDL_RENDERER_PRESENTVSYNC) { + SDL_GL_SetSwapInterval(1); + } else { + SDL_GL_SetSwapInterval(0); + } + if (SDL_GL_GetSwapInterval() > 0) { + renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC; + } + + if (SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &doublebuffer) == 0) { + if (!doublebuffer) { + renderer->info.flags |= SDL_RENDERER_SINGLEBUFFER; + } + } + + if (SDL_GL_ExtensionSupported("GL_OES_draw_texture")) { + printf("using draw texture\n"); + data->GL_OES_draw_texture_supported = SDL_TRUE; + data->useDrawTexture = SDL_TRUE; + } + else { + printf("not using draw texture\n"); + data->GL_OES_draw_texture_supported = SDL_FALSE; + data->useDrawTexture = SDL_FALSE; + } + + data->glGetIntegerv(GL_MAX_TEXTURE_SIZE, &value); + renderer->info.max_texture_width = value; + data->glGetIntegerv(GL_MAX_TEXTURE_SIZE, &value); + renderer->info.max_texture_height = value; + + /* Set up parameters for rendering */ + data->blendMode = -1; + data->scaleMode = -1; + data->glDisable(GL_DEPTH_TEST); + data->glDisable(GL_CULL_FACE); + data->glEnable(GL_TEXTURE_2D); + data->updateSize = SDL_TRUE; + + return renderer; +} + +static int GL_ActivateRenderer(SDL_Renderer * renderer) +{ + + GL_RenderData *data = (GL_RenderData *)renderer->driverdata; + SDL_Window *window = SDL_GetWindowFromID(renderer->window); + + if (data->context == NULL) { + printf("Context is null, dude\n"); + } + + if (SDL_GL_MakeCurrent(window->id, data->context) < 0) { + return -1; + } + if (data->updateSize) { + data->glMatrixMode(GL_PROJECTION); + data->glLoadIdentity(); + data->glMatrixMode(GL_MODELVIEW); + data->glLoadIdentity(); + data->glViewport(0, 0, window->w, window->h); + data->glOrthof(0.0, (GLfloat)window->w, (GLfloat)window->h, 0.0, + 0.0, 1.0); + data->updateSize = SDL_FALSE; + } + return 0; +} + +static int +GL_DisplayModeChanged(SDL_Renderer * renderer) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + + data->updateSize = SDL_TRUE; + return 0; +} + +static __inline__ int +power_of_2(int input) +{ + int value = 1; + + while (value < input) { + value <<= 1; + } + return value; +} + +static int +GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture) +{ + GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata; + SDL_Window *window = SDL_GetWindowFromID(renderer->window); + GL_TextureData *data; + GLint internalFormat; + GLenum format, type; + int texture_w, texture_h; + GLenum result; + switch (texture->format) { + case SDL_PIXELFORMAT_INDEX1LSB: + case SDL_PIXELFORMAT_INDEX1MSB: + case SDL_PIXELFORMAT_INDEX8: + case SDL_PIXELFORMAT_RGB332: + case SDL_PIXELFORMAT_RGB444: + case SDL_PIXELFORMAT_RGB555: + case SDL_PIXELFORMAT_ARGB4444: + case SDL_PIXELFORMAT_ARGB1555: + case SDL_PIXELFORMAT_BGR24: + case SDL_PIXELFORMAT_BGR888: /* can't convert 32 bit format to 24 */ + case SDL_PIXELFORMAT_RGB888: + case SDL_PIXELFORMAT_RGBA8888: + case SDL_PIXELFORMAT_ARGB2101010: + SDL_SetError("Unsupported format"); + return -1; + case SDL_PIXELFORMAT_ARGB8888: + #ifdef GL_IMG_texture_format_BGRA8888 + internalFormat = GL_RGBA; + format = GL_RGBA; + type = GL_UNSIGNED_BYTE; + break; + #else + SDL_SetError("Unsupported format"); + return -1; + #endif + case SDL_PIXELFORMAT_RGB24: + internalFormat = GL_RGB; + format = GL_RGB; + type = GL_UNSIGNED_BYTE; + break; + case SDL_PIXELFORMAT_ABGR8888: + internalFormat = GL_RGBA; + format = GL_RGBA; + type = GL_UNSIGNED_BYTE; + break; + /* + These formats would be supported if SDL had the necessary pixel formats + case SDL_PIXELFORMAT_BGR565: + internalFormat = GL_RGB; + format = GL_RGB; + type = GL_UNSIGNED_SHORT_5_6_5; + break; + case SDL_PIXELFORMAT_ABGR5551: + internalFormat = GL_RGBA; + format = GL_RGBA; + type = GL_UNSIGNED_SHORT_5_5_5_1; + break; + case SDL_PIXELFORMAT_ABGR4444: + internalFormat = GL_RGBA; + format = GL_RGBA; + type = GL_UNSIGNED_SHORT_4_4_4_4; + break; + */ + default: + SDL_SetError("Unsupported texture format"); + return -1; + } + data = (GL_TextureData *) SDL_calloc(1, sizeof(*data)); + if (!data) { + SDL_OutOfMemory(); + return -1; + } + + if (texture->access == SDL_TEXTUREACCESS_STREAMING) { + data->pitch = texture->w * SDL_BYTESPERPIXEL(texture->format); + data->pixels = SDL_malloc(texture->h * data->pitch); + if (!data->pixels) { + SDL_OutOfMemory(); + SDL_free(data); + return -1; + } + } + + texture->driverdata = data; + + renderdata->glGetError(); + renderdata->glGenTextures(1, &data->texture); + + data->type = GL_TEXTURE_2D; + texture_w = power_of_2(texture->w); + texture_h = power_of_2(texture->h); + data->texw = (GLfloat) texture->w / texture_w; + data->texh = (GLfloat) texture->h / texture_h; + + data->format = format; + data->formattype = type; + renderdata->glBindTexture(data->type, data->texture); + renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER, + GL_NEAREST); + renderdata->glTexParameteri(data->type, GL_TEXTURE_MAG_FILTER, + GL_NEAREST); + renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S, + GL_CLAMP_TO_EDGE); + renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T, + GL_CLAMP_TO_EDGE); + + renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w, + texture_h, 0, format, type, NULL); + + result = renderdata->glGetError(); + if (result != GL_NO_ERROR) { + GL_SetError("glTexImage2D()", result); + return -1; + } + return 0; +} + +static int +GL_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture, + void **pixels, int *pitch) +{ + GL_TextureData *data = (GL_TextureData *) texture->driverdata; + + *pixels = data->pixels; + *pitch = data->pitch; + return 0; +} + +static int +GL_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Color * colors, int firstcolor, int ncolors) +{ + SDL_SetError("OpenGL ES does not support paletted textures"); + return -1; +} + +static int +GL_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture, + SDL_Color * colors, int firstcolor, int ncolors) +{ + SDL_SetError("OpenGL ES does not support paletted textures"); + return -1; +} + +static void +SetupTextureUpdate(GL_RenderData * renderdata, SDL_Texture * texture, + int pitch) +{ + + + GL_TextureData *data = (GL_TextureData *) texture->driverdata; + renderdata->glBindTexture(data->type, data->texture); + renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1); +} + +static int +GL_SetTextureColorMod(SDL_Renderer * renderer, SDL_Texture * texture) +{ + return 0; +} + +static int +GL_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture) +{ + return 0; +} + +static int +GL_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture) +{ + switch (texture->blendMode) { + case SDL_TEXTUREBLENDMODE_NONE: + case SDL_TEXTUREBLENDMODE_MASK: + case SDL_TEXTUREBLENDMODE_BLEND: + case SDL_TEXTUREBLENDMODE_ADD: + case SDL_TEXTUREBLENDMODE_MOD: + return 0; + default: + SDL_Unsupported(); + texture->blendMode = SDL_TEXTUREBLENDMODE_NONE; + return -1; + } +} + +static int +GL_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture) +{ + switch (texture->scaleMode) { + case SDL_TEXTURESCALEMODE_NONE: + case SDL_TEXTURESCALEMODE_FAST: + case SDL_TEXTURESCALEMODE_SLOW: + return 0; + case SDL_TEXTURESCALEMODE_BEST: + SDL_Unsupported(); + texture->scaleMode = SDL_TEXTURESCALEMODE_SLOW; + return -1; + default: + SDL_Unsupported(); + texture->scaleMode = SDL_TEXTURESCALEMODE_NONE; + return -1; + } +} + +static int +GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * rect, const void *pixels, int pitch) +{ + GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata; + GL_TextureData *data = (GL_TextureData *) texture->driverdata; + GLenum result; + + SetupTextureUpdate(renderdata, texture, pitch); + renderdata->glGetError(); + renderdata->glTexSubImage2D(data->type, 0, rect->x, rect->y, rect->w, + rect->h, data->format, data->formattype, + pixels); + result = renderdata->glGetError(); + if (result != GL_NO_ERROR) { + GL_SetError("glTexSubImage2D()", result); + return -1; + } + return 0; +} + +static int +GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * rect, int markDirty, void **pixels, + int *pitch) +{ + GL_TextureData *data = (GL_TextureData *) texture->driverdata; + + if (markDirty) { + SDL_AddDirtyRect(&data->dirty, rect); + } + + *pixels = + (void *) ((Uint8 *) data->pixels + rect->y * data->pitch + + rect->x * SDL_BYTESPERPIXEL(texture->format)); + *pitch = data->pitch; + return 0; +} + +static void +GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture) +{ +} + +static void +GL_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture, int numrects, + const SDL_Rect * rects) +{ + GL_TextureData *data = (GL_TextureData *) texture->driverdata; + int i; + + for (i = 0; i < numrects; ++i) { + SDL_AddDirtyRect(&data->dirty, &rects[i]); + } +} + +static int +GL_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b, Uint8 a, + const SDL_Rect * rect) +{ + + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + SDL_Window *window = SDL_GetWindowFromID(renderer->window); + + /* set proper drawing color */ + GLfloat oldClearColor[4]; + + data->glGetFloatv(GL_COLOR_CLEAR_VALUE, oldClearColor); + + data->glClearColor((GLclampf) r * inv255f, (GLclampf) g * inv255f, + (GLclampf) b * inv255f, (GLclampf) a * inv255f); + + data->glScissor(rect->x, window->h - rect->y - rect->h, rect->w, rect->h); + data->glEnable(GL_SCISSOR_TEST); + data->glClear(GL_COLOR_BUFFER_BIT); + data->glDisable(GL_SCISSOR_TEST); + + /* reset clear color */ + data->glClearColor(oldClearColor[0], oldClearColor[1], oldClearColor[2], oldClearColor[2]); + + return 0; +} + +static int +GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * srcrect, const SDL_Rect * dstrect) +{ + + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata; + int minx, miny, maxx, maxy; + GLfloat minu, maxu, minv, maxv; + int i; + void *temp_buffer; /* used for reformatting dirty rect pixels */ + void *temp_ptr; + + if (texturedata->dirty.list) { + SDL_DirtyRect *dirty; + void *pixels; + int bpp = SDL_BYTESPERPIXEL(texture->format); + int pitch = texturedata->pitch; + + SetupTextureUpdate(data, texture, pitch); + + data->glBindTexture(texturedata->type, texturedata->texture); + for (dirty = texturedata->dirty.list; dirty; dirty = dirty->next) { + SDL_Rect *rect = &dirty->rect; + pixels = (void *) ((Uint8 *) texturedata->pixels + rect->y * pitch + rect->x * bpp); + /* There is no GL_UNPACK_ROW_LENGTH in OpenGLES + we must do this reformatting ourselves(!) + + maybe it'd be a good idea to keep a temp buffer around + for this purpose rather than allocating it each time + */ + temp_buffer = SDL_malloc(rect->w * rect->h * bpp); + temp_ptr = temp_buffer; + for (i=0; ih; i++) { + SDL_memcpy(temp_ptr, pixels, rect->w * bpp); + temp_ptr += rect->w * bpp; + pixels += pitch; + } + + data->glTexSubImage2D(texturedata->type, 0, rect->x, rect->y, + rect->w, rect->h, texturedata->format, + texturedata->formattype, temp_buffer); + + SDL_free(temp_buffer); + + } + SDL_ClearDirtyRects(&texturedata->dirty); + } + + data->glBindTexture(texturedata->type, texturedata->texture); + data->glEnable(GL_TEXTURE_2D); + + if (texture->modMode) { + data->glColor4f((GLfloat) texture->r * inv255f, + (GLfloat) texture->g * inv255f, + (GLfloat) texture->b * inv255f, + (GLfloat) texture->a * inv255f); + } else { + data->glColor4f(1.0f, 1.0f, 1.0f, 1.0f); + } + + //if (texture->blendMode != data->blendMode) { + switch (texture->blendMode) { + case SDL_TEXTUREBLENDMODE_NONE: + data->glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL); + data->glDisable(GL_BLEND); + break; + case SDL_TEXTUREBLENDMODE_MASK: + case SDL_TEXTUREBLENDMODE_BLEND: + data->glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); + data->glEnable(GL_BLEND); + data->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); + break; + case SDL_TEXTUREBLENDMODE_ADD: + data->glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); + data->glEnable(GL_BLEND); + data->glBlendFunc(GL_SRC_ALPHA, GL_ONE); + break; + case SDL_TEXTUREBLENDMODE_MOD: + data->glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); + data->glEnable(GL_BLEND); + data->glBlendFunc(GL_ZERO, GL_SRC_COLOR); + break; + } + data->blendMode = texture->blendMode; + // } + + // if (texture->scaleMode != data->scaleMode) { + switch (texture->scaleMode) { + case SDL_TEXTURESCALEMODE_NONE: + case SDL_TEXTURESCALEMODE_FAST: + data->glTexParameteri(texturedata->type, GL_TEXTURE_MIN_FILTER, + GL_NEAREST); + data->glTexParameteri(texturedata->type, GL_TEXTURE_MAG_FILTER, + GL_NEAREST); + break; + case SDL_TEXTURESCALEMODE_SLOW: + case SDL_TEXTURESCALEMODE_BEST: + data->glTexParameteri(texturedata->type, GL_TEXTURE_MIN_FILTER, + GL_LINEAR); + data->glTexParameteri(texturedata->type, GL_TEXTURE_MAG_FILTER, + GL_LINEAR); + break; + } + data->scaleMode = texture->scaleMode; + //} + + if (data->GL_OES_draw_texture_supported && data->useDrawTexture) { + /* this code is a little funny because the viewport is upside down vs SDL's coordinate system */ + SDL_Window *window = SDL_GetWindowFromID(renderer->window); + GLint cropRect[4]; + cropRect[0] = srcrect->x; + cropRect[1] = srcrect->y + srcrect->h; + cropRect[2] = srcrect->w; + cropRect[3] = -srcrect->h; + data->glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, cropRect); + data->glDrawTexiOES(dstrect->x, window->h - dstrect->y - dstrect->h, 0, dstrect->w, dstrect->h); + } + else { + + minx = dstrect->x; + miny = dstrect->y; + maxx = dstrect->x + dstrect->w; + maxy = dstrect->y + dstrect->h; + + minu = (GLfloat) srcrect->x / texture->w; + minu *= texturedata->texw; + maxu = (GLfloat) (srcrect->x + srcrect->w) / texture->w; + maxu *= texturedata->texw; + minv = (GLfloat) srcrect->y / texture->h; + minv *= texturedata->texh; + maxv = (GLfloat) (srcrect->y + srcrect->h) / texture->h; + maxv *= texturedata->texh; + + GLshort vertices[8]; + GLfloat texCoords[8]; + + vertices[0] = minx; vertices[1] = miny; + vertices[2] = maxx; vertices[3] = miny; + vertices[4] = minx; vertices[5] = maxy; + vertices[6] = maxx; vertices[7] = maxy; + + texCoords[0] = minu; texCoords[1] = minv; + texCoords[2] = maxu; texCoords[3] = minv; + texCoords[4] = minu; texCoords[5] = maxv; + texCoords[6] = maxu; texCoords[7] = maxv; + + data->glVertexPointer(2, GL_SHORT, 0, vertices); + data->glEnableClientState(GL_VERTEX_ARRAY); + data->glTexCoordPointer(2, GL_FLOAT, 0, texCoords); + data->glEnableClientState(GL_TEXTURE_COORD_ARRAY); + data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); + + } + + return 0; +} + +static void +GL_RenderPresent(SDL_Renderer * renderer) +{ + SDL_GL_SwapWindow(renderer->window); +} + +static void +GL_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture) +{ + GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata; + GL_TextureData *data = (GL_TextureData *) texture->driverdata; + + if (!data) { + return; + } + if (data->texture) { + glDeleteTextures(1, &data->texture); + } + if (data->pixels) { + SDL_free(data->pixels); + } + SDL_FreeDirtyRects(&data->dirty); + SDL_free(data); + texture->driverdata = NULL; +} + +static void +GL_DestroyRenderer(SDL_Renderer * renderer) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + + if (data) { + if (data->context) { + /* SDL_GL_MakeCurrent(0, NULL); *//* doesn't do anything */ + SDL_GL_DeleteContext(data->context); + } + SDL_free(data); + } + SDL_free(renderer); +} + +#endif /* SDL_VIDEO_RENDER_OGL */ + +/* vi: set ts=4 sw=4 expandtab: */ diff -r da266ae53b98 -r b70b96e615d2 src/video/glesrenderer/SDL_renderer_gles.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/glesrenderer/SDL_renderer_gles.h Thu Jul 17 23:31:42 2008 +0000 @@ -0,0 +1,28 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2006 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" + +/* OpenGL renderer implementation */ + +extern SDL_RenderDriver GL_ES_RenderDriver; + +/* vi: set ts=4 sw=4 expandtab: */