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wined3d: Require ARB_shader_texture_lod for SM3.

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Henri Verbeet 2011-06-16 00:40:30 +02:00 committed by Alexandre Julliard
parent 11bf170ce0
commit c51db63ba4
1 changed files with 3 additions and 19 deletions
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22
dlls/wined3d/glsl_shader.c
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@ -4927,25 +4927,9 @@ static BOOL shader_glsl_dirty_const(void)
static void shader_glsl_get_caps(const struct wined3d_gl_info *gl_info, struct shader_caps *caps)
{
/* NVIDIA GeForce 6 / 7 or ATI R4xx / R5xx cards with GLSL support
* support SM3, but older NVIDIA / ATI models with GLSL support only
* support SM2. In case of NVIDIA we can detect SM3 support based on the
* version of NV_vertex_program / NV_fragment_program. For other cards we
* try to detect SM3 based on the maximum number of native fragment
* program instructions. PS2.0 requires at least 96 instructions, 2.0a/b
* goes up to 512. Assume that if the number of instructions is 512 or
* less we have to do with SM2 hardware. NOTE: SM3 requires 512 or more
* instructions but ATI and NVIDIA offer more than that (1024 vs 4096) on
* their most basic SM3 hardware.
*
* ARB_shader_texture_lod is a requirement for SM3 (texldd). Ideally we'd
* make this a hard requirement, but the extension is still somewhat new,
* and relatively few SM3 shaders actually depend on it. For the moment
* just use it to enable SM3 (20110423). */
if ((gl_info->supported[NV_VERTEX_PROGRAM3] && gl_info->supported[NV_FRAGMENT_PROGRAM2])
|| gl_info->limits.arb_ps_instructions > 512
|| gl_info->supported[ARB_SHADER_TEXTURE_LOD]
|| gl_info->supported[EXT_GPU_SHADER4])
/* ARB_shader_texture_lod or EXT_gpu_shader4 is required for the SM3
* texldd and texldl instructions. */
if (gl_info->supported[ARB_SHADER_TEXTURE_LOD] || gl_info->supported[EXT_GPU_SHADER4])
{
caps->VertexShaderVersion = WINED3DVS_VERSION(3,0);
caps->PixelShaderVersion = WINED3DPS_VERSION(3,0);