wanp/townengine
2
1
Fork 0
Code Issues 6 Pull Requests Packages Projects Releases Wiki Activity

partial implementation of double buffered render

Browse Source
This commit is contained in:
veclav talica
2024-10-15 15:29:45 +03:00
parent 446402c2e0
commit 139394c6de
10 changed files with 294 additions and 96 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
src/rendering/twn_gl_any_rendering.c
View File

@ -32,7 +32,7 @@ void specify_vertex_buffer(VertexBuffer buffer, void const *data, size_t bytes)
}
void bind_quad_element_buffer(void) {
VertexBuffer get_quad_element_buffer(void) {
static GLuint buffer = 0;
/* it's only generated once at runtime */
@ -62,32 +62,8 @@ void bind_quad_element_buffer(void) {
} else
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
}
void clear_draw_buffer(void) {
/* TODO: we can optimize a rectangle drawn over whole window to a clear color call*/
glClearColor((1.0f / 255) * 230,
(1.0f / 255) * 230,
(1.0f / 255) * 230, 1);
glDepthRange(0.0, 1.0);
glDepthMask(GL_TRUE);
/* TODO: don't clear color when skybox is applied? */
/* for that window should match framebuffer */
/* also it is driver dependent, from what i can gather */
/* INFO: also, based on below, driver might prefer it staying this way */
/* https://gamedev.stackexchange.com/questions/90344/render-with-const-depth-value */
/* we could optionally load ARB_invalidate_subdata extension if it's available instead */
glClear(GL_COLOR_BUFFER_BIT |
GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT);
}
void swap_buffers(void) {
SDL_GL_SwapWindow(ctx.window);
return buffer;
}