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Use triangle fans instead of quads

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Quads are Legacy OpenGL
This commit is contained in:
Clownacy 2019-07-31 04:54:22 +00:00
parent eab2a80ae5
commit bd731321f2
1 changed files with 4 additions and 4 deletions
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8
src/Backends/Rendering/OpenGL2.cpp
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@ -259,7 +259,7 @@ void Backend_DrawScreen(void)
vertex_buffer[3][0] = -1.0f;
vertex_buffer[3][1] = 1.0f;
glDrawArrays(GL_QUADS, 0, 4);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
SDL_GL_SwapWindow(window);
@ -357,7 +357,7 @@ static void BlitCommon(Backend_Surface *source_surface, const RECT *rect, long x
vertex_buffer[3][0] = vertex_left;
vertex_buffer[3][1] = vertex_bottom;
glDrawArrays(GL_QUADS, 0, 4);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
void Backend_Blit(Backend_Surface *source_surface, const RECT *rect, Backend_Surface *destination_surface, long x, long y, BOOL colour_key)
@ -400,7 +400,7 @@ static void ColourFillCommon(const RECT *rect, unsigned char red, unsigned char
vertex_buffer[3][0] = (GLfloat)rect->left;
vertex_buffer[3][1] = (GLfloat)rect->bottom;
glDrawArrays(GL_QUADS, 0, 4);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
void Backend_ColourFill(Backend_Surface *surface, const RECT *rect, unsigned char red, unsigned char green, unsigned char blue)
@ -544,7 +544,7 @@ static void DrawGlyphCommon(Backend_Glyph *glyph, long x, long y, const unsigned
vertex_buffer[3][0] = vertex_left;
vertex_buffer[3][1] = vertex_bottom;
glDrawArrays(GL_QUADS, 0, 4);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
void Backend_DrawGlyph(Backend_Surface *surface, Backend_Glyph *glyph, long x, long y, const unsigned char *colours)