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Some minor OpenGL cleanup

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This commit is contained in:
Clownacy 2019-08-09 20:04:46 +01:00
parent 7146288e94
commit d5ceed4f97
1 changed files with 9 additions and 11 deletions
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20
src/Backends/Rendering/OpenGL3.cpp
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@ -205,14 +205,15 @@ static GLuint CompileShader(const char *vertex_shader_source, const char *fragme
return program_id;
}
static void SetFramebufferTarget(GLuint texture_id)
static void SetFramebufferTarget(Backend_Surface *surface)
{
static GLuint last_framebuffer_target;
static Backend_Surface *last_framebuffer_target;
if (texture_id != last_framebuffer_target)
if (surface != last_framebuffer_target)
{
last_framebuffer_target = texture_id;
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture_id, 0);
last_framebuffer_target = surface;
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, surface->texture_id, 0);
glViewport(0, 0, surface->width, surface->height);
}
}
@ -429,8 +430,7 @@ static void BlitCommon(Backend_Surface *source_surface, const RECT *rect, Backen
return;
// Point our framebuffer to the destination texture
SetFramebufferTarget(destination_surface->texture_id);
glViewport(0, 0, destination_surface->width, destination_surface->height);
SetFramebufferTarget(destination_surface);
// Switch to colour-key shader if we have to
glUseProgram(colour_key ? program_texture_colour_key : program_texture);
@ -495,8 +495,7 @@ static void ColourFillCommon(Backend_Surface *surface, const RECT *rect, unsigne
return;
// Point our framebuffer to the destination texture
SetFramebufferTarget(surface->texture_id);
glViewport(0, 0, surface->width, surface->height);
SetFramebufferTarget(surface);
glUseProgram(program_colour_fill);
@ -620,8 +619,7 @@ static void DrawGlyphCommon(Backend_Surface *surface, Backend_Glyph *glyph, long
return;
// Point our framebuffer to the destination texture
SetFramebufferTarget(surface->texture_id);
glViewport(0, 0, surface->width, surface->height);
SetFramebufferTarget(surface);
glEnable(GL_BLEND);