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Fixes OpenGL* Clip Rect functions (by Emmanuel Gil Peyrot)

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This commit is contained in:
Gabriel Jacobo 2013-05-10 10:31:01 -03:00
parent 5d9de376d2
commit 7065c6467d
5 changed files with 21 additions and 7 deletions
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1
src/render/opengles/SDL_glesfuncs.h
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@ -20,6 +20,7 @@ SDL_PROC(void, glMatrixMode, (GLenum))
SDL_PROC(void, glOrthof, (GLfloat, GLfloat, GLfloat, GLfloat, GLfloat, GLfloat))
SDL_PROC(void, glPixelStorei, (GLenum, GLint))
SDL_PROC(void, glReadPixels, (GLint, GLint, GLsizei, GLsizei, GLenum, GLenum, GLvoid*))
SDL_PROC(void, glScissor, (GLint, GLint, GLsizei, GLsizei))
SDL_PROC(void, glTexCoordPointer, (GLint, GLenum, GLsizei, const GLvoid *))
SDL_PROC(void, glTexEnvf, (GLenum, GLenum, GLfloat))
SDL_PROC(void, glTexImage2D, (GLenum, GLint, GLint, GLsizei, GLsizei, GLint, GLenum, GLenum, const GLvoid *))

12
src/render/opengles/SDL_render_gles.c
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@ -635,13 +635,19 @@ GLES_UpdateViewport(SDL_Renderer * renderer)
static int
GLES_UpdateClipRect(SDL_Renderer * renderer)
{
GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
const SDL_Rect *rect = &renderer->clip_rect;
if (SDL_CurrentContext != data->context) {
/* We'll update the clip rect after we rebind the context */
return 0;
}
if (!SDL_RectEmpty(rect)) {
glEnable(GL_SCISSOR_TEST);
glScissor(rect->x, rect->y, rect->x + rect->w, rect->y + rect->h);
data->glEnable(GL_SCISSOR_TEST);
data->glScissor(rect->x, rect->h - rect->y, rect->w, rect->h);
} else {
glDisable(GL_SCISSOR_TEST);
data->glDisable(GL_SCISSOR_TEST);
}
return 0;
}