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Minor optimisations

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This commit is contained in:
Luke Benstead 2018-08-01 09:57:44 +01:00
parent 02b4b2d438
commit 47d3c0f478
1 changed files with 27 additions and 14 deletions
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41
GL/draw.c
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@ -214,14 +214,13 @@ static void generate(AlignedVector* output, const GLenum mode, const GLsizei fir
_parseColour((uint32_t*) &vertex->argb, cptr + (idx * cstride), DIFFUSE_POINTER.size, DIFFUSE_POINTER.type);
} else {
/* Default to white if colours are disabled */
vertex->argb.a = 255;
vertex->argb.r = 255;
vertex->argb.g = 255;
vertex->argb.b = 255;
*((uint32_t*) &vertex->argb) = ~0;
}
if(ENABLED_VERTEX_ATTRIBUTES & UV_ENABLED_FLAG) {
_parseFloats(vertex->uv, uvptr + (idx * uvstride), UV_POINTER.size, UV_POINTER.type);
} else {
vertex->uv[0] = vertex->uv[1] = 0.0f;
}
if(ENABLED_VERTEX_ATTRIBUTES & NORMAL_ENABLED_FLAG) {
@ -232,13 +231,21 @@ static void generate(AlignedVector* output, const GLenum mode, const GLsizei fir
vertex->nxyz[2] = -1.0f;
}
if((mode == GL_TRIANGLES) && ((i + 1) % 3) == 0) {
vertex->flags = PVR_CMD_VERTEX_EOL;
} else if((mode == GL_QUADS) && ((i + 1) % 4) == 0) {
ClipVertex* previous = vertex - 1;
previous->flags = PVR_CMD_VERTEX_EOL;
swapVertex(previous, vertex);
} else if((mode == GL_POLYGON || mode == GL_TRIANGLE_FAN)) {
switch(mode) {
case GL_TRIANGLES: {
if(((i + 1) % 3) == 0) {
vertex->flags = PVR_CMD_VERTEX_EOL;
}
} break;
case GL_QUADS: {
if(((i + 1) % 4) == 0) {
ClipVertex* previous = vertex - 1;
previous->flags = PVR_CMD_VERTEX_EOL;
swapVertex(previous, vertex);
}
} break;
case GL_POLYGON:
case GL_TRIANGLE_FAN: {
ClipVertex* previous = vertex - 1;
if(i == 2) {
swapVertex(previous, vertex);
@ -257,9 +264,15 @@ static void generate(AlignedVector* output, const GLenum mode, const GLsizei fir
vertex->flags = PVR_CMD_VERTEX_EOL;
}
} else if(mode == GL_TRIANGLE_STRIP && j == (max - 1)) {
/* If the mode was triangle strip, then the last vertex is the last vertex */
vertex->flags = PVR_CMD_VERTEX_EOL;
} break;
case GL_TRIANGLE_STRIP:
default: {
if(j == (max - 1)) {
/* If the mode was triangle strip, then the last vertex is the last vertex */
vertex->flags = PVR_CMD_VERTEX_EOL;
}
}
}
}
}