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refactors & viewport fix

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a dinosaur
2022-11-16 09:20:44 +11:00
parent 9ba7a3bda8
commit a4cd5094b1
9 changed files with 61 additions and 40 deletions
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12
draw_opengl.c
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@ -1,4 +1,5 @@
#include "draw.h"
#include "maths.h"
#include <SDL_video.h>
#include <SDL_opengl.h>
#include <stdbool.h>
@ -42,7 +43,7 @@ int InitDraw(SDL_Window* w)
glDisable(GL_CULL_FACE);
glEnable(GL_MULTISAMPLE);
GetDrawSizeInPixels(); // Fills scaleWidth & scaleHeight
SetDrawViewport(GetDrawSizeInPixels()); // Fills scaleWidth & scaleHeight
// Setup orthographic viewport
glMatrixMode(GL_PROJECTION);
@ -65,11 +66,16 @@ size GetDrawSizeInPixels(void)
{
size out;
SDL_GL_GetDrawableSize(SDL_GL_GetCurrentWindow(), &out.w, &out.h);
scaleWidth = 1.0 / (double)out.w;
scaleHeight = 1.0 / (double)out.h;
return out;
}
void SetDrawViewport(size size)
{
glViewport(0, 0, size.w, size.h);
scaleWidth = 1.0 / (double)size.w;
scaleHeight = 1.0 / (double)size.h;
}
void SetDrawColour(uint32_t c)
{