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DTRenderer
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Process color with SIMD for textured triangle

This commit is contained in:
Doyle Thai 2017-05-30 18:07:01 +10:00
parent 49270a2826
commit c1a5b41442
1 changed files with 37 additions and 2 deletions
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39
src/DTRendererRender.cpp
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@ -576,6 +576,7 @@ void DTRRender_TexturedTriangle(PlatformInput *const input,
if (signedAreaParallelogramPixel1 == 0) return;
f32 invSignedAreaParallelogramPixel1 = 1 / signedAreaParallelogramPixel1;
__m128 inv255_4x = _mm_set_ps1(DTRRENDER_INV_255);
__m128 zero_4x = _mm_set_ps1(0.0f);
__m128 two_4x = _mm_set_ps1(2.0f);
__m128 invSignedAreaParallelogram4x = _mm_set_ps1(invSignedAreaParallelogramPixel1);
@ -590,8 +591,9 @@ void DTRRender_TexturedTriangle(PlatformInput *const input,
// NOTE: Step size of 2 pixels across X
signedAreaPixelDeltaX = _mm_mul_ps(signedAreaPixelDeltaX, two_4x);
const DqnV2 uv2SubUv1 = uv2 - uv1;
const DqnV2 uv3SubUv1 = uv3 - uv1;
const DqnV2 uv2SubUv1 = uv2 - uv1;
const DqnV2 uv3SubUv1 = uv3 - uv1;
const __m128 colorModulate = _mm_set_ps(color.a, color.b, color.g, color.r);
const u32 IS_GREATER_MASK = 0xF;
@ -600,6 +602,7 @@ void DTRRender_TexturedTriangle(PlatformInput *const input,
__m128 signedArea1 = signedAreaPixel1;
__m128 signedArea2 = signedAreaPixel2;
#define PROCESS_COLOR_NO_SIMD 0
for (i32 bufferX = min.x; bufferX < max.x; bufferX += 2)
{
__m128 isGreater1 = _mm_cmpge_ps(signedArea1, zero_4x);
@ -641,6 +644,7 @@ void DTRRender_TexturedTriangle(PlatformInput *const input,
u32 texel1 = *(u32 *)(texturePtr + (texelX * texture->bytesPerPixel) +
(texelY * texturePitch));
#if PROCESS_COLOR_NO_SIMD
DqnV4 color1;
color1.a = (f32)(texel1 >> 24);
color1.b = (f32)((texel1 >> 16) & 0xFF);
@ -649,6 +653,21 @@ void DTRRender_TexturedTriangle(PlatformInput *const input,
color1 *= DTRRENDER_INV_255;
color1 = DTRRender_SRGB1ToLinearSpaceV4(color1);
DqnV4 blend = color * color1;
#else
__m128 color1 = _mm_set_ps((f32)(texel1 >> 24),
(f32)((texel1 >> 16) & 0xFF),
(f32)((texel1 >> 8) & 0xFF),
(f32)((texel1 >> 0) & 0xFF));
color1 = _mm_mul_ps(color1, inv255_4x);
color1 = _mm_mul_ps(color1, color1); // to linear space
color1 = _mm_mul_ps(color1, colorModulate);
DqnV4 blend = {};
blend.r = ((f32 *)&color1)[0];
blend.g = ((f32 *)&color1)[1];
blend.b = ((f32 *)&color1)[2];
blend.a = ((f32 *)&color1)[3];
#endif
SetPixel(renderBuffer, bufferX, bufferY, blend, ColorSpace_Linear);
}
@ -694,6 +713,7 @@ void DTRRender_TexturedTriangle(PlatformInput *const input,
u32 texel1 = *(u32 *)(texturePtr + (texelX * texture->bytesPerPixel) +
(texelY * texturePitch));
#if PROCESS_COLOR_NO_SIMD
DqnV4 color1;
color1.a = (f32)(texel1 >> 24);
color1.b = (f32)((texel1 >> 16) & 0xFF);
@ -702,6 +722,21 @@ void DTRRender_TexturedTriangle(PlatformInput *const input,
color1 *= DTRRENDER_INV_255;
color1 = DTRRender_SRGB1ToLinearSpaceV4(color1);
DqnV4 blend = color * color1;
#else
__m128 color1 = _mm_set_ps((f32)(texel1 >> 24),
(f32)((texel1 >> 16) & 0xFF),
(f32)((texel1 >> 8) & 0xFF),
(f32)((texel1 >> 0) & 0xFF));
color1 = _mm_mul_ps(color1, inv255_4x);
color1 = _mm_mul_ps(color1, color1); // to linear space
color1 = _mm_mul_ps(color1, colorModulate);
DqnV4 blend = {};
blend.r = ((f32 *)&color1)[0];
blend.g = ((f32 *)&color1)[1];
blend.b = ((f32 *)&color1)[2];
blend.a = ((f32 *)&color1)[3];
#endif
SetPixel(renderBuffer, bufferX1, bufferY, blend, ColorSpace_Linear);
}
}