From 468a33d19a0187b55a01660c65306db128280bd3 Mon Sep 17 00:00:00 2001 From: Brian Date: Tue, 17 Apr 2007 09:16:30 -0600 Subject: fix/simplify some texture functions --- .../shader/slang/library/slang_common_builtin.gc | 33 +++++++--------------- 1 file changed, 10 insertions(+), 23 deletions(-) (limited to 'src') diff --git a/src/mesa/shader/slang/library/slang_common_builtin.gc b/src/mesa/shader/slang/library/slang_common_builtin.gc index ab14408046..3780a38139 100644 --- a/src/mesa/shader/slang/library/slang_common_builtin.gc +++ b/src/mesa/shader/slang/library/slang_common_builtin.gc @@ -1609,11 +1609,8 @@ vec4 texture1D(const sampler1D sampler, const float coord) vec4 texture1DProj(const sampler1D sampler, const vec2 coord) { - // new coord with .z moved to .w - vec4 coord4; - coord4.x = coord.x; - coord4.w = coord.y; - __asm vec4_texp1d __retVal, sampler, coord4; + // need to swizzle .y into .w + __asm vec4_texp1d __retVal, sampler, coord.xyyy; } vec4 texture1DProj(const sampler1D sampler, const vec4 coord) @@ -1629,11 +1626,8 @@ vec4 texture2D(const sampler2D sampler, const vec2 coord) vec4 texture2DProj(const sampler2D sampler, const vec3 coord) { - // new coord with .z moved to .w - vec4 coord4; - coord4.xy = coord.xy; - coord4.w = coord.z; - __asm vec4_texp2d __retVal, sampler, coord4; + // need to swizzle 'z' into 'w'. + __asm vec4_texp2d __retVal, sampler, coord.xyzz; } vec4 texture2DProj(const sampler2D sampler, const vec4 coord) @@ -1667,11 +1661,8 @@ vec4 shadow1D(const sampler1DShadow sampler, const vec3 coord) vec4 shadow1DProj(const sampler1DShadow sampler, const vec4 coord) { - vec4 pcoord; - pcoord.x = coord.x / coord.w; - pcoord.z = coord.z; - pcoord.w = bias; - __asm vec4_tex1d __retVal, sampler, pcoord; + // .s and .p will be divided by .q + __asm vec4_texp1d __retVal, sampler, coord; } vec4 shadow2D(const sampler2DShadow sampler, const vec3 coord) @@ -1681,10 +1672,8 @@ vec4 shadow2D(const sampler2DShadow sampler, const vec3 coord) vec4 shadow2DProj(const sampler2DShadow sampler, const vec4 coord) { - vec4 pcoord; - pcoord.xy = coord.xy / coord.w; - pcoord.z = coord.z; - __asm vec4_tex2d __retVal, sampler, pcoord; + // .s, .t and .p will be divided by .q + __asm vec4_texp2d __retVal, sampler, coord; } @@ -1696,10 +1685,8 @@ vec4 texture2DRect(const sampler2DRect sampler, const vec2 coord) vec4 texture2DRectProj(const sampler2DRect sampler, const vec3 coord) { - // do projection here - vec4 pcoord; - pcoord.xy = coord.xy / coord.z; - __asm vec4_texp_rect __retVal, sampler, pcoord; + // need to swizzle .y into .w + __asm vec4_texp_rect __retVal, sampler, coord.xyzz; } vec4 texture2DRectProj(const sampler2DRect sampler, const vec4 coord) -- cgit v1.2.3