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wined3d: Add NP2 fixup code to shader_arb_generate_pshader.

This commit is contained in:
Tobias Jakobi 2009-07-01 18:36:47 +02:00 committed by Alexandre Julliard
parent ec30e9a85e
commit 034fa4268c
1 changed files with 38 additions and 0 deletions
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38
dlls/wined3d/arb_program_shader.c
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@ -3377,6 +3377,44 @@ static GLuint shader_arb_generate_pshader(IWineD3DPixelShaderImpl *This,
compiled->ycorrection = WINED3D_CONST_NUM_UNUSED;
}
/* Load constants to fixup NP2 texcoords if there are still free constants left:
* Constants (texture dimensions) for the NP2 fixup are loaded as local program parameters. This will consume
* at most 8 (MAX_FRAGMENT_SAMPLERS / 2) parameters, which is highly unlikely, since the application had to
* use 16 NP2 textures at the same time. In case that we run out of constants the fixup is simply not
* applied / activated. This will probably result in wrong rendering of the texture, but will save us from
* shader compilation errors and the subsequent errors when drawing with this shader. */
if (priv_ctx.cur_ps_args->super.np2_fixup) {
struct arb_ps_np2fixup_info* const fixup = priv_ctx.cur_np2fixup_info;
const WORD map = priv_ctx.cur_ps_args->super.np2_fixup;
const UINT max_lconsts = gl_info->ps_arb_max_local_constants;
fixup->offset = next_local;
fixup->super.active = 0;
cur = 0;
for (i = 0; i < MAX_FRAGMENT_SAMPLERS; ++i) {
if (!(map & (1 << i))) continue;
if (fixup->offset + (cur >> 1) < max_lconsts) {
fixup->super.active |= (1 << i);
fixup->super.idx[i] = cur++;
} else {
FIXME("No free constant found to load NP2 fixup data into shader. "
"Sampling from this texture will probably look wrong.\n");
break;
}
}
fixup->super.num_consts = (cur + 1) >> 1;
if (fixup->super.num_consts) {
shader_addline(buffer, "PARAM np2fixup[%u] = { program.env[%u..%u] };\n",
fixup->super.num_consts, fixup->offset, fixup->super.num_consts + fixup->offset - 1);
}
next_local += fixup->super.num_consts;
}
if(shader_priv->clipplane_emulation)
{
shader_addline(buffer, "KIL fragment.texcoord[%u];\n", shader_priv->clipplane_emulation - 1);