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Start repairing paletted textures

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This commit is contained in:
Luke Benstead 2023-09-02 21:10:42 +01:00
parent 49a0e103cb
commit 4d39e19ed5
1 changed files with 20 additions and 4 deletions
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24
GL/texture.c
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@ -281,6 +281,12 @@ static GLint _determineStrideInternal(GLenum internalFormat) {
case GL_COLOR_INDEX4_EXT:
case GL_COLOR_INDEX8_EXT:
return 1;
case GL_RGBA8:
return 4;
case GL_RGB8:
return 3;
case GL_RGBA4:
return 2;
}
return -1;
@ -1047,6 +1053,7 @@ static GLuint _determinePVRFormat(GLint internalFormat) {
case GL_COMPRESSED_RGB_565_VQ_MIPMAP_TWID_KOS:
return GPU_TXRFMT_RGB565 | GPU_TXRFMT_VQ_ENABLE | GPU_TXRFMT_TWIDDLED;
default:
fprintf(stderr, "Unexpected format: %d\n", internalFormat);
_glKosThrowError(GL_INVALID_ENUM, __func__);
return 0;
}
@ -1203,6 +1210,8 @@ static int _determineConversion(GLint internalFormat, GLenum format, GLenum type
{NULL, GL_COLOR_INDEX8_EXT, GL_COLOR_INDEX, GL_UNSIGNED_BYTE, false},
{NULL, GL_COLOR_INDEX8_EXT, GL_COLOR_INDEX, GL_BYTE, false},
{NULL, GL_COLOR_INDEX8_TWID_KOS, GL_COLOR_INDEX, GL_UNSIGNED_BYTE_TWID_KOS, false},
{NULL, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, false},
{NULL, GL_RGBA8, GL_RGBA, GL_BYTE, false},
};
for(size_t i = 0; i < sizeof(conversions) / sizeof(struct Entry); ++i) {
@ -1215,6 +1224,7 @@ static int _determineConversion(GLint internalFormat, GLenum format, GLenum type
}
}
fprintf(stderr, "No conversion found for format: %d, internalFormat: %d, type: %d\n", format, internalFormat, type);
return -1;
}
@ -1707,6 +1717,7 @@ GLAPI void APIENTRY glColorTableEXT(GLenum target, GLenum internalFormat, GLsize
}
GLint sourceStride = _determineStride(format, type);
GLint destStride = _determineStrideInternal(internalFormat);
gl_assert(sourceStride > -1);
@ -1785,10 +1796,15 @@ GLAPI void APIENTRY glColorTableEXT(GLenum target, GLenum internalFormat, GLsize
/* Transform and copy the source palette to the texture */
GLushort i = 0;
for(; i < width; ++i) {
convert(src, dst);
src += sourceStride;
dst += 4;
if(convert) {
convert(src, dst);
src += sourceStride;
dst += destStride;
} else {
for(int j = 0; j < sourceStride; ++j) {
*dst++ = *src++;
}
}
}
_glApplyColorTable(palette);