28 lines
757 B
C++
28 lines
757 B
C++
#include "common.h"
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#include "dchip8_platform.h"
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void dchip8_update(PlatformRenderBuffer *renderBuffer, PlatformInput *input)
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{
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ASSERT(renderBuffer.bytesPerPixel == 4);
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const i32 numPixels = renderBuffer->width * renderBuffer->height;
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u32 *bitmapBuffer = (u32 *)renderBuffer->memory;
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for (i32 i = 0; i < numPixels; i++)
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{
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// NOTE: Win32 AlphaBlend requires the RGB components to be
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// premultiplied with alpha.
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f32 normA = 1.0f;
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f32 normR = (normA * 0.0f);
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f32 normG = (normA * 0.0f);
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f32 normB = (normA * 1.0f);
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u8 r = (u8)(normR * 255.0f);
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u8 g = (u8)(normG * 255.0f);
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u8 b = (u8)(normB * 255.0f);
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u8 a = (u8)(normA * 255.0f);
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u32 color = (a << 24) | (r << 16) | (g << 8) | (b << 0);
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bitmapBuffer[i] = color;
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}
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}
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