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-rw-r--r--src/mesa/main/texenvprogram.c223
1 files changed, 142 insertions, 81 deletions
diff --git a/src/mesa/main/texenvprogram.c b/src/mesa/main/texenvprogram.c
index 64b2ab6c135..af51a206a56 100644
--- a/src/mesa/main/texenvprogram.c
+++ b/src/mesa/main/texenvprogram.c
@@ -2,6 +2,7 @@
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
+ * Copyright 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
@@ -28,6 +29,7 @@
#include "glheader.h"
#include "macros.h"
#include "enums.h"
+#include "shader/program.h"
#include "shader/prog_parameter.h"
#include "shader/prog_cache.h"
#include "shader/prog_instruction.h"
@@ -36,16 +38,44 @@
#include "shader/programopt.h"
#include "texenvprogram.h"
+
+#define MAX_TERMS 4
+
+
+/*
+ * Note on texture units:
+ *
+ * The number of texture units supported by fixed-function fragment
+ * processing is MAX_TEXTURE_COORD_UNITS, not MAX_TEXTURE_IMAGE_UNITS.
+ * That's because there's a one-to-one correspondence between texture
+ * coordinates and samplers in fixed-function processing.
+ *
+ * Since fixed-function vertex processing is limited to MAX_TEXTURE_COORD_UNITS
+ * sets of texcoords, so is fixed-function fragment processing.
+ *
+ * We can safely use ctx->Const.MaxTextureUnits for loop bounds.
+ */
+
+
+struct texenvprog_cache_item
+{
+ GLuint hash;
+ void *key;
+ struct gl_fragment_program *data;
+ struct texenvprog_cache_item *next;
+};
+
+
/**
* Up to nine instructions per tex unit, plus fog, specular color.
*/
-#define MAX_INSTRUCTIONS ((MAX_TEXTURE_UNITS * 9) + 12)
+#define MAX_INSTRUCTIONS ((MAX_TEXTURE_COORD_UNITS * 9) + 12)
#define DISASSEM (MESA_VERBOSE & VERBOSE_DISASSEM)
struct mode_opt {
- GLubyte Source:4;
- GLubyte Operand:3;
+ GLuint Source:4;
+ GLuint Operand:3;
};
struct state_key {
@@ -59,16 +89,17 @@ struct state_key {
struct {
GLuint enabled:1;
GLuint source_index:3; /* one of TEXTURE_1D/2D/3D/CUBE/RECT_INDEX */
+ GLuint shadow:1;
GLuint ScaleShiftRGB:2;
GLuint ScaleShiftA:2;
- GLuint NumArgsRGB:2;
+ GLuint NumArgsRGB:3;
GLuint ModeRGB:4;
- GLuint NumArgsA:2;
- GLuint ModeA:4;
+ struct mode_opt OptRGB[MAX_TERMS];
- struct mode_opt OptRGB[3];
- struct mode_opt OptA[3];
+ GLuint NumArgsA:3;
+ GLuint ModeA:4;
+ struct mode_opt OptA[MAX_TERMS];
} unit[8];
};
@@ -104,7 +135,9 @@ static GLuint translate_operand( GLenum operand )
case GL_ONE_MINUS_SRC_ALPHA: return OPR_ONE_MINUS_SRC_ALPHA;
case GL_ZERO: return OPR_ZERO;
case GL_ONE: return OPR_ONE;
- default: return OPR_UNKNOWN;
+ default:
+ assert(0);
+ return OPR_UNKNOWN;
}
}
@@ -120,6 +153,7 @@ static GLuint translate_operand( GLenum operand )
#define SRC_CONSTANT 9
#define SRC_PRIMARY_COLOR 10
#define SRC_PREVIOUS 11
+#define SRC_ZERO 12
#define SRC_UNKNOWN 15
static GLuint translate_source( GLenum src )
@@ -137,32 +171,49 @@ static GLuint translate_source( GLenum src )
case GL_CONSTANT: return SRC_CONSTANT;
case GL_PRIMARY_COLOR: return SRC_PRIMARY_COLOR;
case GL_PREVIOUS: return SRC_PREVIOUS;
- default: return SRC_UNKNOWN;
+ case GL_ZERO:
+ return SRC_ZERO;
+ default:
+ assert(0);
+ return SRC_UNKNOWN;
}
}
-#define MODE_REPLACE 0
-#define MODE_MODULATE 1
-#define MODE_ADD 2
-#define MODE_ADD_SIGNED 3
-#define MODE_INTERPOLATE 4
-#define MODE_SUBTRACT 5
-#define MODE_DOT3_RGB 6
-#define MODE_DOT3_RGB_EXT 7
-#define MODE_DOT3_RGBA 8
-#define MODE_DOT3_RGBA_EXT 9
-#define MODE_MODULATE_ADD_ATI 10
-#define MODE_MODULATE_SIGNED_ADD_ATI 11
-#define MODE_MODULATE_SUBTRACT_ATI 12
-#define MODE_UNKNOWN 15
-
-static GLuint translate_mode( GLenum mode )
+#define MODE_REPLACE 0 /* r = a0 */
+#define MODE_MODULATE 1 /* r = a0 * a1 */
+#define MODE_ADD 2 /* r = a0 + a1 */
+#define MODE_ADD_SIGNED 3 /* r = a0 + a1 - 0.5 */
+#define MODE_INTERPOLATE 4 /* r = a0 * a2 + a1 * (1 - a2) */
+#define MODE_SUBTRACT 5 /* r = a0 - a1 */
+#define MODE_DOT3_RGB 6 /* r = a0 . a1 */
+#define MODE_DOT3_RGB_EXT 7 /* r = a0 . a1 */
+#define MODE_DOT3_RGBA 8 /* r = a0 . a1 */
+#define MODE_DOT3_RGBA_EXT 9 /* r = a0 . a1 */
+#define MODE_MODULATE_ADD_ATI 10 /* r = a0 * a2 + a1 */
+#define MODE_MODULATE_SIGNED_ADD_ATI 11 /* r = a0 * a2 + a1 - 0.5 */
+#define MODE_MODULATE_SUBTRACT_ATI 12 /* r = a0 * a2 - a1 */
+#define MODE_ADD_PRODUCTS 13 /* r = a0 * a1 + a2 * a3 */
+#define MODE_ADD_PRODUCTS_SIGNED 14 /* r = a0 * a1 + a2 * a3 - 0.5 */
+#define MODE_UNKNOWN 15
+
+/**
+ * Translate GL combiner state into a MODE_x value
+ */
+static GLuint translate_mode( GLenum envMode, GLenum mode )
{
switch (mode) {
case GL_REPLACE: return MODE_REPLACE;
case GL_MODULATE: return MODE_MODULATE;
- case GL_ADD: return MODE_ADD;
- case GL_ADD_SIGNED: return MODE_ADD_SIGNED;
+ case GL_ADD:
+ if (envMode == GL_COMBINE4_NV)
+ return MODE_ADD_PRODUCTS;
+ else
+ return MODE_ADD;
+ case GL_ADD_SIGNED:
+ if (envMode == GL_COMBINE4_NV)
+ return MODE_ADD_PRODUCTS_SIGNED;
+ else
+ return MODE_ADD_SIGNED;
case GL_INTERPOLATE: return MODE_INTERPOLATE;
case GL_SUBTRACT: return MODE_SUBTRACT;
case GL_DOT3_RGB: return MODE_DOT3_RGB;
@@ -172,7 +223,9 @@ static GLuint translate_mode( GLenum mode )
case GL_MODULATE_ADD_ATI: return MODE_MODULATE_ADD_ATI;
case GL_MODULATE_SIGNED_ADD_ATI: return MODE_MODULATE_SIGNED_ADD_ATI;
case GL_MODULATE_SUBTRACT_ATI: return MODE_MODULATE_SUBTRACT_ATI;
- default: return MODE_UNKNOWN;
+ default:
+ assert(0);
+ return MODE_UNKNOWN;
}
}
@@ -182,14 +235,16 @@ static GLuint translate_tex_src_bit( GLbitfield bit )
/* make sure number of switch cases is correct */
assert(NUM_TEXTURE_TARGETS == 7);
switch (bit) {
- case TEXTURE_1D_BIT: return TEXTURE_1D_INDEX;
- case TEXTURE_2D_BIT: return TEXTURE_2D_INDEX;
- case TEXTURE_3D_BIT: return TEXTURE_3D_INDEX;
- case TEXTURE_CUBE_BIT: return TEXTURE_CUBE_INDEX;
- case TEXTURE_RECT_BIT: return TEXTURE_RECT_INDEX;
- case TEXTURE_1D_ARRAY_BIT: return TEXTURE_1D_ARRAY_INDEX;
- case TEXTURE_2D_ARRAY_BIT: return TEXTURE_2D_ARRAY_INDEX;
- default: return TEXTURE_UNKNOWN_INDEX;
+ case TEXTURE_1D_BIT: return TEXTURE_1D_INDEX;
+ case TEXTURE_2D_BIT: return TEXTURE_2D_INDEX;
+ case TEXTURE_RECT_BIT: return TEXTURE_RECT_INDEX;
+ case TEXTURE_3D_BIT: return TEXTURE_3D_INDEX;
+ case TEXTURE_CUBE_BIT: return TEXTURE_CUBE_INDEX;
+ case TEXTURE_1D_ARRAY_BIT: return TEXTURE_1D_ARRAY_INDEX;
+ case TEXTURE_2D_ARRAY_BIT: return TEXTURE_2D_ARRAY_INDEX;
+ default:
+ assert(0);
+ return TEXTURE_UNKNOWN_INDEX;
}
}
@@ -301,12 +356,15 @@ static void make_state_key( GLcontext *ctx, struct state_key *key )
memset(key, 0, sizeof(*key));
- for (i=0;i<MAX_TEXTURE_UNITS;i++) {
+ for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i];
-
- if (!texUnit->_ReallyEnabled)
+ GLenum format;
+
+ if (!texUnit->_ReallyEnabled || !texUnit->Enabled)
continue;
+ format = texUnit->_Current->Image[0][texUnit->_Current->BaseLevel]->_BaseFormat;
+
key->unit[i].enabled = 1;
key->enabled_units |= (1<<i);
key->nr_enabled_units = i+1;
@@ -314,19 +372,22 @@ static void make_state_key( GLcontext *ctx, struct state_key *key )
key->unit[i].source_index =
translate_tex_src_bit(texUnit->_ReallyEnabled);
+ key->unit[i].shadow = ((texUnit->_Current->CompareMode == GL_COMPARE_R_TO_TEXTURE) &&
+ ((format == GL_DEPTH_COMPONENT) ||
+ (format == GL_DEPTH_STENCIL_EXT)));
key->unit[i].NumArgsRGB = texUnit->_CurrentCombine->_NumArgsRGB;
key->unit[i].NumArgsA = texUnit->_CurrentCombine->_NumArgsA;
key->unit[i].ModeRGB =
- translate_mode(texUnit->_CurrentCombine->ModeRGB);
+ translate_mode(texUnit->EnvMode, texUnit->_CurrentCombine->ModeRGB);
key->unit[i].ModeA =
- translate_mode(texUnit->_CurrentCombine->ModeA);
+ translate_mode(texUnit->EnvMode, texUnit->_CurrentCombine->ModeA);
key->unit[i].ScaleShiftRGB = texUnit->_CurrentCombine->ScaleShiftRGB;
key->unit[i].ScaleShiftA = texUnit->_CurrentCombine->ScaleShiftA;
- for (j=0;j<3;j++) {
+ for (j = 0; j < MAX_TERMS; j++) {
key->unit[i].OptRGB[j].Operand =
translate_operand(texUnit->_CurrentCombine->OperandRGB[j]);
key->unit[i].OptA[j].Operand =
@@ -398,7 +459,7 @@ struct texenv_fragment_program {
GLbitfield temp_in_use; /**< Tracks temporary regs which are in use. */
GLboolean error;
- struct ureg src_texture[MAX_TEXTURE_UNITS];
+ struct ureg src_texture[MAX_TEXTURE_COORD_UNITS];
/* Reg containing each texture unit's sampled texture color,
* else undef.
*/
@@ -615,7 +676,7 @@ emit_op(struct texenv_fragment_program *p,
{
GLuint nr = p->program->Base.NumInstructions++;
struct prog_instruction *inst = &p->program->Base.Instructions[nr];
-
+
assert(nr < MAX_INSTRUCTIONS);
_mesa_init_instructions(inst, 1);
@@ -788,12 +849,17 @@ static struct ureg get_source( struct texenv_fragment_program *p,
case SRC_PRIMARY_COLOR:
return register_input(p, FRAG_ATTRIB_COL0);
+ case SRC_ZERO:
+ return get_zero(p);
+
case SRC_PREVIOUS:
- default:
if (is_undef(p->src_previous))
return register_input(p, FRAG_ATTRIB_COL0);
else
return p->src_previous;
+
+ default:
+ assert(0);
}
}
@@ -834,7 +900,9 @@ static struct ureg emit_combine_source( struct texenv_fragment_program *p,
case OPR_ONE:
return get_one(p);
case OPR_SRC_COLOR:
+ return src;
default:
+ assert(0);
return src;
}
}
@@ -883,10 +951,12 @@ static struct ureg emit_combine( struct texenv_fragment_program *p,
GLuint mode,
const struct mode_opt *opt)
{
- struct ureg src[3];
+ struct ureg src[MAX_TERMS];
struct ureg tmp, half;
GLuint i;
+ assert(nr <= MAX_TERMS);
+
tmp = undef; /* silence warning (bug 5318) */
for (i = 0; i < nr; i++)
@@ -962,7 +1032,26 @@ static struct ureg emit_combine( struct texenv_fragment_program *p,
/* Arg0 * Arg2 - Arg1 */
emit_arith( p, OPCODE_MAD, dest, mask, 0, src[0], src[2], negate(src[1]) );
return dest;
+ case MODE_ADD_PRODUCTS:
+ /* Arg0 * Arg1 + Arg2 * Arg3 */
+ {
+ struct ureg tmp0 = get_temp(p);
+ emit_arith( p, OPCODE_MUL, tmp0, mask, 0, src[0], src[1], undef );
+ emit_arith( p, OPCODE_MAD, dest, mask, saturate, src[2], src[3], tmp0 );
+ }
+ return dest;
+ case MODE_ADD_PRODUCTS_SIGNED:
+ /* Arg0 * Arg1 + Arg2 * Arg3 - 0.5 */
+ {
+ struct ureg tmp0 = get_temp(p);
+ half = get_half(p);
+ emit_arith( p, OPCODE_MUL, tmp0, mask, 0, src[0], src[1], undef );
+ emit_arith( p, OPCODE_MAD, tmp0, mask, 0, src[2], src[3], tmp0 );
+ emit_arith( p, OPCODE_SUB, dest, mask, saturate, tmp0, half, undef );
+ }
+ return dest;
default:
+ assert(0);
return src[0];
}
}
@@ -1084,6 +1173,10 @@ static void load_texture( struct texenv_fragment_program *p, GLuint unit )
p->src_texture[unit] = emit_texld( p, OPCODE_TXP,
tmp, WRITEMASK_XYZW,
unit, dim, texcoord );
+
+ if (p->state->unit[unit].shadow)
+ p->program->Base.ShadowSamplers |= 1 << unit;
+
p->program->Base.SamplersUsed |= (1 << unit);
/* This identity mapping should already be in place
* (see _mesa_init_program_struct()) but let's be safe.
@@ -1115,6 +1208,7 @@ static GLboolean load_texenv_source( struct texenv_fragment_program *p,
break;
default:
+ /* not a texture src - do nothing */
break;
}
@@ -1179,7 +1273,7 @@ create_new_program(GLcontext *ctx, struct state_key *key,
p.program->Base.InputsRead = 0;
p.program->Base.OutputsWritten = 1 << FRAG_RESULT_COLR;
- for (unit = 0; unit < MAX_TEXTURE_UNITS; unit++)
+ for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++)
p.src_texture[unit] = undef;
p.src_previous = undef;
@@ -1311,36 +1405,3 @@ _mesa_get_fixed_func_fragment_program(GLcontext *ctx)
return prog;
}
-
-
-
-/**
- * If _MaintainTexEnvProgram is set we'll generate a fragment program that
- * implements the current texture env/combine mode.
- * This function generates that program and puts it into effect.
- */
-void
-_mesa_UpdateTexEnvProgram( GLcontext *ctx )
-{
- const struct gl_fragment_program *prev = ctx->FragmentProgram._Current;
-
- ASSERT(ctx->FragmentProgram._MaintainTexEnvProgram);
-
- /* If a conventional fragment program/shader isn't in effect... */
- if (!ctx->FragmentProgram._Enabled &&
- (!ctx->Shader.CurrentProgram ||
- !ctx->Shader.CurrentProgram->FragmentProgram) ) {
-
- ctx->FragmentProgram._Current
- = ctx->FragmentProgram._TexEnvProgram
- = _mesa_get_fixed_func_fragment_program(ctx);
- }
-
- /* Tell the driver about the change. Could define a new target for
- * this?
- */
- if (ctx->FragmentProgram._Current != prev && ctx->Driver.BindProgram) {
- ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB,
- (struct gl_program *) ctx->FragmentProgram._Current);
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 06:39:03 +0000