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bypass of near/far planes for 2d case, hints for perspective correction, flat shading for 2d

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This commit is contained in:
veclav talica
2024-07-30 23:37:34 +03:00
parent b12c5e31c3
commit 8a66bc43e4
4 changed files with 31 additions and 246 deletions
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4
src/main.c
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@ -234,6 +234,10 @@ static bool initialize(void) {
log_info("OpenGL context: %s\n", glGetString(GL_VERSION));
glHint(GL_TEXTURE_COMPRESSION_HINT, GL_NICEST);
glHint(GL_GENERATE_MIPMAP_HINT, GL_NICEST);
glHint(GL_FOG_HINT, GL_FASTEST);
/* might need this to have multiple windows */
ctx.window_id = SDL_GetWindowID(ctx.window);

13
src/rendering.c
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@ -164,6 +164,12 @@ void render(void) {
GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
glShadeModel(GL_SMOOTH);
if (GLAD_GL_ARB_depth_clamp)
glDisable(GL_DEPTH_CLAMP);
{
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(&camera_projection_matrix.row[0].x);
@ -178,6 +184,13 @@ void render(void) {
glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glFlush();
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
glShadeModel(GL_FLAT);
/* removes near/far plane comparison and discard */
if (GLAD_GL_ARB_depth_clamp)
glDisable(GL_DEPTH_CLAMP);
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();