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wined3d: Get rid of TMP access in texm3x2*. 

texm3x2pad knows which register the following texm3x2depth or tex instruction
will use, and it knows that this register is uninitialized. So use it for
temporary storage instead of TMP.
This commit is contained in:
Stefan Dösinger 2009-05-04 15:11:04 +02:00 committed by Alexandre Julliard
parent 17b001788f
commit ced325f816
1 changed files with 15 additions and 8 deletions
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23
dlls/wined3d/arb_program_shader.c
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@ -1260,7 +1260,10 @@ static void pshader_hw_texm3x2pad(const struct wined3d_shader_instruction *ins)
char src0_name[50];
shader_arb_get_src_param(ins, &ins->src[0], 0, src0_name);
shader_addline(buffer, "DP3 TMP.x, fragment.texcoord[%u], %s;\n", reg, src0_name);
/* The next instruction will be a texm3x2tex or texm3x2depth that writes to the uninitialized
* T<reg+1> register. Use this register to store the calculated vector
*/
shader_addline(buffer, "DP3 T%u.x, fragment.texcoord[%u], %s;\n", reg + 1, reg, src0_name);
}
static void pshader_hw_texm3x2tex(const struct wined3d_shader_instruction *ins)
@ -1272,12 +1275,16 @@ static void pshader_hw_texm3x2tex(const struct wined3d_shader_instruction *ins)
SHADER_BUFFER *buffer = ins->ctx->buffer;
char dst_str[50];
char src0_name[50];
char dst_reg[50];
/* We know that we're writing to the uninitialized T<reg> register, so use it for temporary storage */
sprintf(dst_reg, "T%u", reg);
shader_arb_get_dst_param(ins, &ins->dst[0], dst_str);
shader_arb_get_src_param(ins, &ins->src[0], 0, src0_name);
shader_addline(buffer, "DP3 TMP.y, fragment.texcoord[%u], %s;\n", reg, src0_name);
shader_addline(buffer, "DP3 %s.y, fragment.texcoord[%u], %s;\n", dst_reg, reg, src0_name);
flags = reg < MAX_TEXTURES ? deviceImpl->stateBlock->textureState[reg][WINED3DTSS_TEXTURETRANSFORMFLAGS] : 0;
shader_hw_sample(ins, reg, dst_str, "TMP", flags & WINED3DTTFF_PROJECTED, FALSE);
shader_hw_sample(ins, reg, dst_str, dst_reg, flags & WINED3DTTFF_PROJECTED, FALSE);
}
static void pshader_hw_texm3x3pad(const struct wined3d_shader_instruction *ins)
@ -1478,16 +1485,16 @@ static void pshader_hw_texm3x2depth(const struct wined3d_shader_instruction *ins
char src0[50];
shader_arb_get_src_param(ins, &ins->src[0], 0, src0);
shader_addline(buffer, "DP3 TMP.y, fragment.texcoord[%u], %s;\n", dst_reg, src0);
shader_addline(buffer, "DP3 T%u.y, fragment.texcoord[%u], %s;\n", dst_reg, dst_reg, src0);
/* How to deal with the special case dst_name.g == 0? if r != 0, then
* the r * (1 / 0) will give infinity, which is clamped to 1.0, the correct
* result. But if r = 0.0, then 0 * inf = 0, which is incorrect.
*/
shader_addline(buffer, "RCP TMP.y, TMP.y;\n");
shader_addline(buffer, "MUL TMP.x, TMP.x, TMP.y;\n");
shader_addline(buffer, "MIN TMP.x, TMP.x, one.x;\n");
shader_addline(buffer, "MAX result.depth, TMP.x, 0.0;\n");
shader_addline(buffer, "RCP T%u.y, T%u.y;\n", dst_reg, dst_reg);
shader_addline(buffer, "MUL T%u.x, T%u.x, T%u.y;\n", dst_reg, dst_reg, dst_reg);
shader_addline(buffer, "MIN T%u.x, T%u.x, one.x;\n", dst_reg, dst_reg);
shader_addline(buffer, "MAX result.depth, T%u.x, 0.0;\n", dst_reg);
}
/** Handles transforming all WINED3DSIO_M?x? opcodes for