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Dreamcast: Optimise a tiny bit

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UnknownShadow200 2024-03-12 23:32:41 +11:00
parent 0b82f4f3df
commit c087dfac50
2 changed files with 7 additions and 12 deletions
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2
readme.md
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@ -59,7 +59,7 @@ ClassiCube runs on:
* macOS - 10.5 or later (but can be compiled to work with 10.3/10.4 though)
* Linux - needs `libcurl` and `libopenal`
* Android - 2.3 or later
* iOS - 10.3 or later
* iOS - 8.0 or later
* Most web browsers (even runs on IE11)
And also runs on:

17
third_party/gldc/src/draw.c vendored
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@ -34,12 +34,6 @@ GL_FORCE_INLINE Vertex* _glSubmissionTargetStart(SubmissionTarget* target) {
return aligned_vector_at(&target->output->vector, target->start_offset);
}
typedef struct {
float u, v;
} Float2;
static const Float2 F2ZERO = {0.0f, 0.0f};
static void generateQuads(SubmissionTarget* target, const GLsizei first, const GLuint count) {
/* Read from the client buffers and generate an array of ClipVertices */
TRACE();
@ -55,24 +49,25 @@ static void generateQuads(SubmissionTarget* target, const GLsizei first, const G
Vertex* dst = start;
const float w = 1.0f;
PREFETCH(src);
// TODO: optimise
ITERATE(numQuads) {
// 4 vertices per quad
Vertex* it = dst;
PREFETCH(it); // TODO: more prefetching?
PREFETCH(src);
for(GLuint j = 0; j < 4; ++j) {
PREFETCH(src + stride);
TransformVertex((const float*)src, &w, it->xyz, &it->w);
*((uint32_t*)it->bgra) = *((uint32_t*)(src + 12));
*((uint32_t*)&it->bgra) = *((uint32_t*)(src + 12));
if(has_uv) {
MEMCPY4(it->uv, src + 16, sizeof(float) * 2);
*((uint32_t*)&it->uv[0]) = *((uint32_t*)(src + 16));
*((uint32_t*)&it->uv[1]) = *((uint32_t*)(src + 20));
} else {
*((Float2*)it->uv) = F2ZERO;
it->uv[0] = 0.0f;
it->uv[1] = 0.0f;
}
src += stride;