Renamed files for consistency
--HG-- rename : src/render/direct3d/SDL_d3drender.c => src/render/direct3d/SDL_render_d3d.c rename : src/render/opengl/SDL_renderer_gl.c => src/render/opengl/SDL_render_gl.c rename : src/render/opengles/SDL_renderer_gles.c => src/render/opengles/SDL_render_gles.c rename : src/render/software/SDL_renderer_sw.c => src/render/software/SDL_render_sw.c rename : src/render/software/SDL_renderer_sw_c.h => src/render/software/SDL_render_sw_c.h
This commit is contained in:
Sam Lantinga
parent
991558a464
commit
f002356b91
6 changed files with 1 additions and 1 deletions
748
src/render/opengles/SDL_render_gles.c
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748
src/render/opengles/SDL_render_gles.c
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@ -0,0 +1,748 @@
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2010 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#if SDL_VIDEO_RENDER_OGL_ES
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#include "SDL_opengles.h"
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#include "../SDL_sysrender.h"
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#if defined(SDL_VIDEO_DRIVER_PANDORA)
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/* Empty function stub to get OpenGL ES 1.x support without */
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/* OpenGL ES extension GL_OES_draw_texture supported */
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GL_API void GL_APIENTRY
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glDrawTexiOES(GLint x, GLint y, GLint z, GLint width, GLint height)
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{
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return;
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}
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#endif /* PANDORA */
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/* OpenGL ES 1.1 renderer implementation, based on the OpenGL renderer */
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/* Used to re-create the window with OpenGL capability */
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extern int SDL_RecreateWindow(SDL_Window * window, Uint32 flags);
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static const float inv255f = 1.0f / 255.0f;
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static SDL_Renderer *GLES_CreateRenderer(SDL_Window * window, Uint32 flags);
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static void GLES_WindowEvent(SDL_Renderer * renderer,
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const SDL_WindowEvent *event);
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static int GLES_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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static int GLES_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * rect, const void *pixels,
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int pitch);
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static int GLES_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * rect, void **pixels, int *pitch);
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static void GLES_UnlockTexture(SDL_Renderer * renderer,
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SDL_Texture * texture);
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static int GLES_RenderDrawPoints(SDL_Renderer * renderer,
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const SDL_Point * points, int count);
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static int GLES_RenderDrawLines(SDL_Renderer * renderer,
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const SDL_Point * points, int count);
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static int GLES_RenderFillRects(SDL_Renderer * renderer,
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const SDL_Rect ** rects, int count);
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static int GLES_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * srcrect,
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const SDL_Rect * dstrect);
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static void GLES_RenderPresent(SDL_Renderer * renderer);
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static void GLES_DestroyTexture(SDL_Renderer * renderer,
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SDL_Texture * texture);
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static void GLES_DestroyRenderer(SDL_Renderer * renderer);
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SDL_RenderDriver GL_ES_RenderDriver = {
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GLES_CreateRenderer,
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{
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"opengl_es",
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(SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_ACCELERATED),
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1,
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{SDL_PIXELFORMAT_ABGR8888},
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0,
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0}
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};
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typedef struct
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{
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SDL_GLContext context;
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SDL_bool updateSize;
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int blendMode;
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#ifndef APIENTRY
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#define APIENTRY
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#endif
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SDL_bool useDrawTexture;
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SDL_bool GL_OES_draw_texture_supported;
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/* OpenGL ES functions */
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#define SDL_PROC(ret,func,params) ret (APIENTRY *func) params;
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#include "../../video/SDL_glesfuncs.h"
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#undef SDL_PROC
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} GLES_RenderData;
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typedef struct
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{
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GLuint texture;
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GLenum type;
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GLfloat texw;
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GLfloat texh;
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GLenum format;
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GLenum formattype;
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void *pixels;
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int pitch;
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} GLES_TextureData;
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static void
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GLES_SetError(const char *prefix, GLenum result)
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{
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const char *error;
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switch (result) {
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case GL_NO_ERROR:
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error = "GL_NO_ERROR";
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break;
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case GL_INVALID_ENUM:
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error = "GL_INVALID_ENUM";
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break;
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case GL_INVALID_VALUE:
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error = "GL_INVALID_VALUE";
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break;
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case GL_INVALID_OPERATION:
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error = "GL_INVALID_OPERATION";
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break;
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case GL_STACK_OVERFLOW:
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error = "GL_STACK_OVERFLOW";
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break;
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case GL_STACK_UNDERFLOW:
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error = "GL_STACK_UNDERFLOW";
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break;
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case GL_OUT_OF_MEMORY:
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error = "GL_OUT_OF_MEMORY";
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break;
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default:
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error = "UNKNOWN";
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break;
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}
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SDL_SetError("%s: %s", prefix, error);
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}
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static int
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GLES_LoadFunctions(GLES_RenderData * data)
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{
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#define SDL_PROC(ret,func,params) \
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data->func = func;
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#include "../../video/SDL_glesfuncs.h"
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#undef SDL_PROC
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return 0;
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}
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SDL_Renderer *
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GLES_CreateRenderer(SDL_Window * window, Uint32 flags)
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{
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SDL_Renderer *renderer;
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GLES_RenderData *data;
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GLint value;
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Uint32 window_flags;
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window_flags = SDL_GetWindowFlags(window);
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if (!(window_flags & SDL_WINDOW_OPENGL)) {
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if (SDL_RecreateWindow(window, window_flags | SDL_WINDOW_OPENGL) < 0) {
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return NULL;
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}
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}
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renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
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if (!renderer) {
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SDL_OutOfMemory();
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return NULL;
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}
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data = (GLES_RenderData *) SDL_calloc(1, sizeof(*data));
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if (!data) {
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GLES_DestroyRenderer(renderer);
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SDL_OutOfMemory();
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return NULL;
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}
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renderer->WindowEvent = GLES_WindowEvent;
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renderer->CreateTexture = GLES_CreateTexture;
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renderer->UpdateTexture = GLES_UpdateTexture;
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renderer->LockTexture = GLES_LockTexture;
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renderer->UnlockTexture = GLES_UnlockTexture;
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renderer->RenderDrawPoints = GLES_RenderDrawPoints;
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renderer->RenderDrawLines = GLES_RenderDrawLines;
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renderer->RenderFillRects = GLES_RenderFillRects;
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renderer->RenderCopy = GLES_RenderCopy;
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renderer->RenderPresent = GLES_RenderPresent;
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renderer->DestroyTexture = GLES_DestroyTexture;
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renderer->DestroyRenderer = GLES_DestroyRenderer;
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renderer->info = GL_ES_RenderDriver.info;
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renderer->driverdata = data;
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renderer->info.flags = SDL_RENDERER_ACCELERATED;
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if (GLES_LoadFunctions(data) < 0) {
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GLES_DestroyRenderer(renderer);
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return NULL;
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}
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data->context = SDL_GL_CreateContext(window);
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if (!data->context) {
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GLES_DestroyRenderer(renderer);
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return NULL;
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}
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if (SDL_GL_MakeCurrent(window, data->context) < 0) {
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GLES_DestroyRenderer(renderer);
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return NULL;
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}
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if (flags & SDL_RENDERER_PRESENTVSYNC) {
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SDL_GL_SetSwapInterval(1);
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} else {
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SDL_GL_SetSwapInterval(0);
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}
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if (SDL_GL_GetSwapInterval() > 0) {
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renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
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}
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#if SDL_VIDEO_DRIVER_PANDORA
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data->GL_OES_draw_texture_supported = SDL_FALSE;
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data->useDrawTexture = SDL_FALSE;
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#else
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if (SDL_GL_ExtensionSupported("GL_OES_draw_texture")) {
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data->GL_OES_draw_texture_supported = SDL_TRUE;
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data->useDrawTexture = SDL_TRUE;
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} else {
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data->GL_OES_draw_texture_supported = SDL_FALSE;
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data->useDrawTexture = SDL_FALSE;
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}
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#endif
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data->glGetIntegerv(GL_MAX_TEXTURE_SIZE, &value);
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renderer->info.max_texture_width = value;
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data->glGetIntegerv(GL_MAX_TEXTURE_SIZE, &value);
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renderer->info.max_texture_height = value;
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/* Set up parameters for rendering */
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data->blendMode = -1;
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data->glDisable(GL_DEPTH_TEST);
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data->glDisable(GL_CULL_FACE);
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data->updateSize = SDL_TRUE;
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data->glEnableClientState(GL_VERTEX_ARRAY);
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data->glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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return renderer;
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}
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static SDL_GLContext SDL_CurrentContext = NULL;
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static int
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GLES_ActivateRenderer(SDL_Renderer * renderer)
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{
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GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
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SDL_Window *window = renderer->window;
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if (SDL_CurrentContext != data->context) {
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if (SDL_GL_MakeCurrent(window, data->context) < 0) {
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return -1;
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}
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SDL_CurrentContext = data->context;
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}
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if (data->updateSize) {
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int w, h;
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SDL_GetWindowSize(window, &w, &h);
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data->glMatrixMode(GL_PROJECTION);
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data->glLoadIdentity();
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data->glMatrixMode(GL_MODELVIEW);
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data->glLoadIdentity();
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data->glViewport(0, 0, w, h);
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data->glOrthof(0.0, (GLfloat) w, (GLfloat) h, 0.0, 0.0, 1.0);
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data->updateSize = SDL_FALSE;
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}
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return 0;
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}
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static void
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GLES_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
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{
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GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
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if (event->event == SDL_WINDOWEVENT_RESIZED) {
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/* Rebind the context to the window area and update matrices */
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SDL_CurrentContext = NULL;
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data->updateSize = SDL_TRUE;
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}
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}
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static __inline__ int
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power_of_2(int input)
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{
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int value = 1;
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while (value < input) {
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value <<= 1;
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}
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return value;
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}
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static int
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GLES_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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{
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GLES_RenderData *renderdata = (GLES_RenderData *) renderer->driverdata;
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GLES_TextureData *data;
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GLint internalFormat;
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GLenum format, type;
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int texture_w, texture_h;
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GLenum result;
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GLES_ActivateRenderer(renderer);
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switch (texture->format) {
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case SDL_PIXELFORMAT_ABGR8888:
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internalFormat = GL_RGBA;
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format = GL_RGBA;
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type = GL_UNSIGNED_BYTE;
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break;
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default:
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SDL_SetError("Texture format %s not supported by OpenGL ES",
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SDL_GetPixelFormatName(texture->format));
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return -1;
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}
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data = (GLES_TextureData *) SDL_calloc(1, sizeof(*data));
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if (!data) {
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SDL_OutOfMemory();
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return -1;
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}
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if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
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data->pitch = texture->w * SDL_BYTESPERPIXEL(texture->format);
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data->pixels = SDL_malloc(texture->h * data->pitch);
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if (!data->pixels) {
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SDL_OutOfMemory();
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SDL_free(data);
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return -1;
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}
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}
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texture->driverdata = data;
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renderdata->glGetError();
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renderdata->glEnable(GL_TEXTURE_2D);
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renderdata->glGenTextures(1, &data->texture);
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data->type = GL_TEXTURE_2D;
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/* no NPOV textures allowed in OpenGL ES (yet) */
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texture_w = power_of_2(texture->w);
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texture_h = power_of_2(texture->h);
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data->texw = (GLfloat) texture->w / texture_w;
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data->texh = (GLfloat) texture->h / texture_h;
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data->format = format;
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data->formattype = type;
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renderdata->glBindTexture(data->type, data->texture);
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renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER,
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GL_LINEAR);
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renderdata->glTexParameteri(data->type, GL_TEXTURE_MAG_FILTER,
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GL_LINEAR);
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renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S,
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GL_CLAMP_TO_EDGE);
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renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T,
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GL_CLAMP_TO_EDGE);
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renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w,
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texture_h, 0, format, type, NULL);
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renderdata->glDisable(GL_TEXTURE_2D);
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result = renderdata->glGetError();
|
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if (result != GL_NO_ERROR) {
|
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GLES_SetError("glTexImage2D()", result);
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return -1;
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}
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return 0;
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}
|
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|
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static void
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SetupTextureUpdate(GLES_RenderData * renderdata, SDL_Texture * texture,
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int pitch)
|
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{
|
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renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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}
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|
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static int
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GLES_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
|
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const SDL_Rect * rect, const void *pixels, int pitch)
|
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{
|
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GLES_RenderData *renderdata = (GLES_RenderData *) renderer->driverdata;
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GLES_TextureData *data = (GLES_TextureData *) texture->driverdata;
|
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GLenum result;
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int bpp = SDL_BYTESPERPIXEL(texture->format);
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void * temp_buffer;
|
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void * temp_ptr;
|
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int i;
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|
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GLES_ActivateRenderer(renderer);
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renderdata->glGetError();
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SetupTextureUpdate(renderdata, texture, pitch);
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renderdata->glEnable(data->type);
|
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renderdata->glBindTexture(data->type, data->texture);
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|
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if( rect->w * bpp == pitch ) {
|
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temp_buffer = (void *)pixels; /* No need to reformat */
|
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} else {
|
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/* Reformatting of mem area required */
|
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temp_buffer = SDL_malloc(rect->w * rect->h * bpp);
|
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temp_ptr = temp_buffer;
|
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for (i = 0; i < rect->h; i++) {
|
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SDL_memcpy(temp_ptr, pixels, rect->w * bpp);
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temp_ptr += rect->w * bpp;
|
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pixels += pitch;
|
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}
|
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}
|
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|
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renderdata->glTexSubImage2D(data->type, 0, rect->x, rect->y, rect->w,
|
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rect->h, data->format, data->formattype,
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temp_buffer);
|
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|
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if( temp_buffer != pixels ) {
|
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SDL_free(temp_buffer);
|
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}
|
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|
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renderdata->glDisable(data->type);
|
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result = renderdata->glGetError();
|
||||
if (result != GL_NO_ERROR) {
|
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GLES_SetError("glTexSubImage2D()", result);
|
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return -1;
|
||||
}
|
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return 0;
|
||||
}
|
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|
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static int
|
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GLES_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
|
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const SDL_Rect * rect, void **pixels, int *pitch)
|
||||
{
|
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GLES_TextureData *data = (GLES_TextureData *) texture->driverdata;
|
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|
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*pixels =
|
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(void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
|
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rect->x * SDL_BYTESPERPIXEL(texture->format));
|
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*pitch = data->pitch;
|
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return 0;
|
||||
}
|
||||
|
||||
static void
|
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GLES_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
|
||||
{
|
||||
GLES_RenderData *renderdata = (GLES_RenderData *) renderer->driverdata;
|
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GLES_TextureData *data = (GLES_TextureData *) texture->driverdata;
|
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|
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GLES_ActivateRenderer(renderer);
|
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|
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SetupTextureUpdate(renderdata, texture, data->pitch);
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renderdata->glEnable(data->type);
|
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renderdata->glBindTexture(data->type, data->texture);
|
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renderdata->glTexSubImage2D(data->type, 0, 0, 0, texture->w,
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texture->h, data->format, data->formattype,
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data->pixels);
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renderdata->glDisable(data->type);
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||||
}
|
||||
|
||||
static void
|
||||
GLES_SetBlendMode(GLES_RenderData * data, int blendMode)
|
||||
{
|
||||
if (blendMode != data->blendMode) {
|
||||
switch (blendMode) {
|
||||
case SDL_BLENDMODE_NONE:
|
||||
data->glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
||||
data->glDisable(GL_BLEND);
|
||||
break;
|
||||
case SDL_BLENDMODE_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_BLENDMODE_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_BLENDMODE_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 = blendMode;
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
GLES_RenderDrawPoints(SDL_Renderer * renderer, const SDL_Point * points,
|
||||
int count)
|
||||
{
|
||||
GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
|
||||
int i;
|
||||
GLshort *vertices;
|
||||
|
||||
GLES_ActivateRenderer(renderer);
|
||||
|
||||
GLES_SetBlendMode(data, renderer->blendMode);
|
||||
|
||||
data->glColor4f((GLfloat) renderer->r * inv255f,
|
||||
(GLfloat) renderer->g * inv255f,
|
||||
(GLfloat) renderer->b * inv255f,
|
||||
(GLfloat) renderer->a * inv255f);
|
||||
|
||||
vertices = SDL_stack_alloc(GLshort, count*2);
|
||||
for (i = 0; i < count; ++i) {
|
||||
vertices[2*i+0] = (GLshort)points[i].x;
|
||||
vertices[2*i+1] = (GLshort)points[i].y;
|
||||
}
|
||||
data->glVertexPointer(2, GL_SHORT, 0, vertices);
|
||||
data->glDrawArrays(GL_POINTS, 0, count);
|
||||
SDL_stack_free(vertices);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
GLES_RenderDrawLines(SDL_Renderer * renderer, const SDL_Point * points,
|
||||
int count)
|
||||
{
|
||||
GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
|
||||
int i;
|
||||
GLshort *vertices;
|
||||
|
||||
GLES_ActivateRenderer(renderer);
|
||||
|
||||
GLES_SetBlendMode(data, renderer->blendMode);
|
||||
|
||||
data->glColor4f((GLfloat) renderer->r * inv255f,
|
||||
(GLfloat) renderer->g * inv255f,
|
||||
(GLfloat) renderer->b * inv255f,
|
||||
(GLfloat) renderer->a * inv255f);
|
||||
|
||||
vertices = SDL_stack_alloc(GLshort, count*2);
|
||||
for (i = 0; i < count; ++i) {
|
||||
vertices[2*i+0] = (GLshort)points[i].x;
|
||||
vertices[2*i+1] = (GLshort)points[i].y;
|
||||
}
|
||||
data->glVertexPointer(2, GL_SHORT, 0, vertices);
|
||||
if (count > 2 &&
|
||||
points[0].x == points[count-1].x && points[0].y == points[count-1].y) {
|
||||
/* GL_LINE_LOOP takes care of the final segment */
|
||||
--count;
|
||||
data->glDrawArrays(GL_LINE_LOOP, 0, count);
|
||||
} else {
|
||||
data->glDrawArrays(GL_LINE_STRIP, 0, count);
|
||||
}
|
||||
SDL_stack_free(vertices);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
GLES_RenderFillRects(SDL_Renderer * renderer, const SDL_Rect ** rects,
|
||||
int count)
|
||||
{
|
||||
GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
|
||||
int i;
|
||||
|
||||
GLES_ActivateRenderer(renderer);
|
||||
|
||||
GLES_SetBlendMode(data, renderer->blendMode);
|
||||
|
||||
data->glColor4f((GLfloat) renderer->r * inv255f,
|
||||
(GLfloat) renderer->g * inv255f,
|
||||
(GLfloat) renderer->b * inv255f,
|
||||
(GLfloat) renderer->a * inv255f);
|
||||
|
||||
for (i = 0; i < count; ++i) {
|
||||
const SDL_Rect *rect = rects[i];
|
||||
GLshort minx = rect->x;
|
||||
GLshort maxx = rect->x + rect->w;
|
||||
GLshort miny = rect->y;
|
||||
GLshort maxy = rect->y + rect->h;
|
||||
GLshort vertices[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;
|
||||
|
||||
data->glVertexPointer(2, GL_SHORT, 0, vertices);
|
||||
data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
GLES_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
|
||||
const SDL_Rect * srcrect, const SDL_Rect * dstrect)
|
||||
{
|
||||
|
||||
GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
|
||||
GLES_TextureData *texturedata = (GLES_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;
|
||||
|
||||
GLES_ActivateRenderer(renderer);
|
||||
|
||||
data->glEnable(GL_TEXTURE_2D);
|
||||
|
||||
data->glBindTexture(texturedata->type, texturedata->texture);
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
GLES_SetBlendMode(data, texture->blendMode);
|
||||
|
||||
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 */
|
||||
GLint cropRect[4];
|
||||
int w, h;
|
||||
SDL_Window *window = renderer->window;
|
||||
|
||||
SDL_GetWindowSize(window, &w, &h);
|
||||
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, 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->glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
|
||||
data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
|
||||
}
|
||||
|
||||
data->glDisable(GL_TEXTURE_2D);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
GLES_RenderPresent(SDL_Renderer * renderer)
|
||||
{
|
||||
GLES_ActivateRenderer(renderer);
|
||||
|
||||
SDL_GL_SwapWindow(renderer->window);
|
||||
}
|
||||
|
||||
static void
|
||||
GLES_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
|
||||
{
|
||||
GLES_TextureData *data = (GLES_TextureData *) texture->driverdata;
|
||||
|
||||
GLES_ActivateRenderer(renderer);
|
||||
|
||||
if (!data) {
|
||||
return;
|
||||
}
|
||||
if (data->texture) {
|
||||
glDeleteTextures(1, &data->texture);
|
||||
}
|
||||
if (data->pixels) {
|
||||
SDL_free(data->pixels);
|
||||
}
|
||||
SDL_free(data);
|
||||
texture->driverdata = NULL;
|
||||
}
|
||||
|
||||
static void
|
||||
GLES_DestroyRenderer(SDL_Renderer * renderer)
|
||||
{
|
||||
GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
|
||||
|
||||
if (data) {
|
||||
if (data->context) {
|
||||
SDL_GL_DeleteContext(data->context);
|
||||
}
|
||||
SDL_free(data);
|
||||
}
|
||||
SDL_free(renderer);
|
||||
}
|
||||
|
||||
#endif /* SDL_VIDEO_RENDER_OGL_ES */
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
Loading…
Add table
Add a link
Reference in a new issue