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Add DXT1 and DXT3 texture compression.

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This commit is contained in:
aignacio_sf 2007-02-08 21:22:29 +00:00
parent 730446fdaa
commit fb6de5abb1
1 changed files with 27 additions and 1 deletions
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26
panda/src/dxgsg8/dxTextureContext8.cxx
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@ -76,6 +76,7 @@ create_texture(DXScreenData &scrn) {
int num_alpha_bits; // number of alpha bits in texture pixfmt
D3DFORMAT target_pixel_format = D3DFMT_UNKNOWN;
bool needs_luminance = false;
bool compress_texture = false;
nassertr(IS_VALID_PTR(get_texture()), false);
@ -133,6 +134,24 @@ create_texture(DXScreenData &scrn) {
break;
}
// check for texture compression
switch (get_texture()->get_texture_type()) {
case Texture::TT_1d_texture:
case Texture::TT_2d_texture:
case Texture::TT_cube_map:
// check config setting
if (compressed_textures) {
// no compression for render target textures
if (get_texture()->get_render_to_texture() == false) {
compress_texture = true;
}
}
break;
case Texture::TT_3d_texture:
// not supported by all video chips
break;
}
// make sure we handled all the possible cases
nassertr(_d3d_format != D3DFMT_UNKNOWN, false);
@ -288,6 +307,9 @@ create_texture(DXScreenData &scrn) {
break; //bail
if (!dx_force_16bpptextures) {
if (compress_texture) {
CHECK_FOR_FMT(DXT3, Conv32toDXT3);
}
if (num_color_channels == 4) {
CHECK_FOR_FMT(A8R8G8B8, Conv32to32);
} else {
@ -342,6 +364,10 @@ create_texture(DXScreenData &scrn) {
case 24:
nassertr(num_color_channels == 3, false);
if (compress_texture) {
CHECK_FOR_FMT(DXT1, Conv24toDXT1);
}
if (!dx_force_16bpptextures) {
CHECK_FOR_FMT(R8G8B8, Conv24to24);