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Diffstat (limited to 'mesalib/src/mesa/swrast/s_atifragshader.c')
-rw-r--r--mesalib/src/mesa/swrast/s_atifragshader.c1208
1 files changed, 604 insertions, 604 deletions
diff --git a/mesalib/src/mesa/swrast/s_atifragshader.c b/mesalib/src/mesa/swrast/s_atifragshader.c
index 1338b6802..6019eea5e 100644
--- a/mesalib/src/mesa/swrast/s_atifragshader.c
+++ b/mesalib/src/mesa/swrast/s_atifragshader.c
@@ -1,604 +1,604 @@
-/*
- * Copyright (C) 2004 David Airlie All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * DAVID AIRLIE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include "main/glheader.h"
-#include "main/colormac.h"
-#include "main/macros.h"
-#include "main/atifragshader.h"
-#include "swrast/s_atifragshader.h"
-#include "swrast/s_context.h"
-
-
-/**
- * State for executing ATI fragment shader.
- */
-struct atifs_machine
-{
- GLfloat Registers[6][4]; /** six temporary registers */
- GLfloat PrevPassRegisters[6][4];
- GLfloat Inputs[2][4]; /** Primary, secondary input colors */
-};
-
-
-
-/**
- * Fetch a texel.
- */
-static void
-fetch_texel(GLcontext * ctx, const GLfloat texcoord[4], GLfloat lambda,
- GLuint unit, GLfloat color[4])
-{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
-
- /* XXX use a float-valued TextureSample routine here!!! */
- swrast->TextureSample[unit](ctx, ctx->Texture.Unit[unit]._Current,
- 1, (const GLfloat(*)[4]) texcoord,
- &lambda, (GLfloat (*)[4]) color);
-}
-
-static void
-apply_swizzle(GLfloat values[4], GLuint swizzle)
-{
- GLfloat s, t, r, q;
-
- s = values[0];
- t = values[1];
- r = values[2];
- q = values[3];
-
- switch (swizzle) {
- case GL_SWIZZLE_STR_ATI:
- values[0] = s;
- values[1] = t;
- values[2] = r;
- break;
- case GL_SWIZZLE_STQ_ATI:
- values[0] = s;
- values[1] = t;
- values[2] = q;
- break;
- case GL_SWIZZLE_STR_DR_ATI:
- values[0] = s / r;
- values[1] = t / r;
- values[2] = 1 / r;
- break;
- case GL_SWIZZLE_STQ_DQ_ATI:
-/* make sure q is not 0 to avoid problems later with infinite values (texture lookup)? */
- if (q == 0.0F)
- q = 0.000000001F;
- values[0] = s / q;
- values[1] = t / q;
- values[2] = 1.0F / q;
- break;
- }
- values[3] = 0.0;
-}
-
-static void
-apply_src_rep(GLint optype, GLuint rep, GLfloat * val)
-{
- GLint i;
- GLint start, end;
- if (!rep)
- return;
-
- start = optype ? 3 : 0;
- end = 4;
-
- for (i = start; i < end; i++) {
- switch (rep) {
- case GL_RED:
- val[i] = val[0];
- break;
- case GL_GREEN:
- val[i] = val[1];
- break;
- case GL_BLUE:
- val[i] = val[2];
- break;
- case GL_ALPHA:
- val[i] = val[3];
- break;
- }
- }
-}
-
-static void
-apply_src_mod(GLint optype, GLuint mod, GLfloat * val)
-{
- GLint i;
- GLint start, end;
-
- if (!mod)
- return;
-
- start = optype ? 3 : 0;
- end = 4;
-
- for (i = start; i < end; i++) {
- if (mod & GL_COMP_BIT_ATI)
- val[i] = 1 - val[i];
-
- if (mod & GL_BIAS_BIT_ATI)
- val[i] = val[i] - 0.5F;
-
- if (mod & GL_2X_BIT_ATI)
- val[i] = 2 * val[i];
-
- if (mod & GL_NEGATE_BIT_ATI)
- val[i] = -val[i];
- }
-}
-
-static void
-apply_dst_mod(GLuint optype, GLuint mod, GLfloat * val)
-{
- GLint i;
- GLint has_sat = mod & GL_SATURATE_BIT_ATI;
- GLint start, end;
-
- mod &= ~GL_SATURATE_BIT_ATI;
-
- start = optype ? 3 : 0;
- end = optype ? 4 : 3;
-
- for (i = start; i < end; i++) {
- switch (mod) {
- case GL_2X_BIT_ATI:
- val[i] = 2 * val[i];
- break;
- case GL_4X_BIT_ATI:
- val[i] = 4 * val[i];
- break;
- case GL_8X_BIT_ATI:
- val[i] = 8 * val[i];
- break;
- case GL_HALF_BIT_ATI:
- val[i] = val[i] * 0.5F;
- break;
- case GL_QUARTER_BIT_ATI:
- val[i] = val[i] * 0.25F;
- break;
- case GL_EIGHTH_BIT_ATI:
- val[i] = val[i] * 0.125F;
- break;
- }
-
- if (has_sat) {
- if (val[i] < 0.0F)
- val[i] = 0.0F;
- else if (val[i] > 1.0F)
- val[i] = 1.0F;
- }
- else {
- if (val[i] < -8.0F)
- val[i] = -8.0F;
- else if (val[i] > 8.0F)
- val[i] = 8.0F;
- }
- }
-}
-
-
-static void
-write_dst_addr(GLuint optype, GLuint mod, GLuint mask, GLfloat * src,
- GLfloat * dst)
-{
- GLint i;
- apply_dst_mod(optype, mod, src);
-
- if (optype == ATI_FRAGMENT_SHADER_COLOR_OP) {
- if (mask) {
- if (mask & GL_RED_BIT_ATI)
- dst[0] = src[0];
-
- if (mask & GL_GREEN_BIT_ATI)
- dst[1] = src[1];
-
- if (mask & GL_BLUE_BIT_ATI)
- dst[2] = src[2];
- }
- else {
- for (i = 0; i < 3; i++)
- dst[i] = src[i];
- }
- }
- else
- dst[3] = src[3];
-}
-
-static void
-finish_pass(struct atifs_machine *machine)
-{
- GLint i;
-
- for (i = 0; i < 6; i++) {
- COPY_4V(machine->PrevPassRegisters[i], machine->Registers[i]);
- }
-}
-
-struct ati_fs_opcode_st ati_fs_opcodes[] = {
- {GL_ADD_ATI, 2},
- {GL_SUB_ATI, 2},
- {GL_MUL_ATI, 2},
- {GL_MAD_ATI, 3},
- {GL_LERP_ATI, 3},
- {GL_MOV_ATI, 1},
- {GL_CND_ATI, 3},
- {GL_CND0_ATI, 3},
- {GL_DOT2_ADD_ATI, 3},
- {GL_DOT3_ATI, 2},
- {GL_DOT4_ATI, 2}
-};
-
-
-
-static void
-handle_pass_op(struct atifs_machine *machine, struct atifs_setupinst *texinst,
- const SWspan *span, GLuint column, GLuint idx)
-{
- GLuint swizzle = texinst->swizzle;
- GLuint pass_tex = texinst->src;
-
- if (pass_tex >= GL_TEXTURE0_ARB && pass_tex <= GL_TEXTURE7_ARB) {
- pass_tex -= GL_TEXTURE0_ARB;
- COPY_4V(machine->Registers[idx],
- span->array->attribs[FRAG_ATTRIB_TEX0 + pass_tex][column]);
- }
- else if (pass_tex >= GL_REG_0_ATI && pass_tex <= GL_REG_5_ATI) {
- pass_tex -= GL_REG_0_ATI;
- COPY_4V(machine->Registers[idx], machine->PrevPassRegisters[pass_tex]);
- }
- apply_swizzle(machine->Registers[idx], swizzle);
-
-}
-
-static void
-handle_sample_op(GLcontext * ctx, struct atifs_machine *machine,
- struct atifs_setupinst *texinst, const SWspan *span,
- GLuint column, GLuint idx)
-{
-/* sample from unit idx using texinst->src as coords */
- GLuint swizzle = texinst->swizzle;
- GLuint coord_source = texinst->src;
- GLfloat tex_coords[4] = { 0 };
-
- if (coord_source >= GL_TEXTURE0_ARB && coord_source <= GL_TEXTURE7_ARB) {
- coord_source -= GL_TEXTURE0_ARB;
- COPY_4V(tex_coords,
- span->array->attribs[FRAG_ATTRIB_TEX0 + coord_source][column]);
- }
- else if (coord_source >= GL_REG_0_ATI && coord_source <= GL_REG_5_ATI) {
- coord_source -= GL_REG_0_ATI;
- COPY_4V(tex_coords, machine->PrevPassRegisters[coord_source]);
- }
- apply_swizzle(tex_coords, swizzle);
- fetch_texel(ctx, tex_coords, 0.0F, idx, machine->Registers[idx]);
-}
-
-#define SETUP_SRC_REG(optype, i, x) \
-do { \
- COPY_4V(src[optype][i], x); \
-} while (0)
-
-
-
-/**
- * Execute the given fragment shader.
- * NOTE: we do everything in single-precision floating point
- * \param ctx - rendering context
- * \param shader - the shader to execute
- * \param machine - virtual machine state
- * \param span - the SWspan we're operating on
- * \param column - which pixel [i] we're operating on in the span
- */
-static void
-execute_shader(GLcontext *ctx, const struct ati_fragment_shader *shader,
- struct atifs_machine *machine, const SWspan *span,
- GLuint column)
-{
- GLuint pc;
- struct atifs_instruction *inst;
- struct atifs_setupinst *texinst;
- GLint optype;
- GLuint i;
- GLint j, pass;
- GLint dstreg;
- GLfloat src[2][3][4];
- GLfloat zeros[4] = { 0.0, 0.0, 0.0, 0.0 };
- GLfloat ones[4] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat dst[2][4], *dstp;
-
- for (pass = 0; pass < shader->NumPasses; pass++) {
- if (pass > 0)
- finish_pass(machine);
- for (j = 0; j < MAX_NUM_FRAGMENT_REGISTERS_ATI; j++) {
- texinst = &shader->SetupInst[pass][j];
- if (texinst->Opcode == ATI_FRAGMENT_SHADER_PASS_OP)
- handle_pass_op(machine, texinst, span, column, j);
- else if (texinst->Opcode == ATI_FRAGMENT_SHADER_SAMPLE_OP)
- handle_sample_op(ctx, machine, texinst, span, column, j);
- }
-
- for (pc = 0; pc < shader->numArithInstr[pass]; pc++) {
- inst = &shader->Instructions[pass][pc];
-
- /* setup the source registers for color and alpha ops */
- for (optype = 0; optype < 2; optype++) {
- for (i = 0; i < inst->ArgCount[optype]; i++) {
- GLint index = inst->SrcReg[optype][i].Index;
-
- if (index >= GL_REG_0_ATI && index <= GL_REG_5_ATI)
- SETUP_SRC_REG(optype, i,
- machine->Registers[index - GL_REG_0_ATI]);
- else if (index >= GL_CON_0_ATI && index <= GL_CON_7_ATI) {
- if (shader->LocalConstDef & (1 << (index - GL_CON_0_ATI))) {
- SETUP_SRC_REG(optype, i,
- shader->Constants[index - GL_CON_0_ATI]);
- } else {
- SETUP_SRC_REG(optype, i,
- ctx->ATIFragmentShader.GlobalConstants[index - GL_CON_0_ATI]);
- }
- }
- else if (index == GL_ONE)
- SETUP_SRC_REG(optype, i, ones);
- else if (index == GL_ZERO)
- SETUP_SRC_REG(optype, i, zeros);
- else if (index == GL_PRIMARY_COLOR_EXT)
- SETUP_SRC_REG(optype, i,
- machine->Inputs[ATI_FS_INPUT_PRIMARY]);
- else if (index == GL_SECONDARY_INTERPOLATOR_ATI)
- SETUP_SRC_REG(optype, i,
- machine->Inputs[ATI_FS_INPUT_SECONDARY]);
-
- apply_src_rep(optype, inst->SrcReg[optype][i].argRep,
- src[optype][i]);
- apply_src_mod(optype, inst->SrcReg[optype][i].argMod,
- src[optype][i]);
- }
- }
-
- /* Execute the operations - color then alpha */
- for (optype = 0; optype < 2; optype++) {
- if (inst->Opcode[optype]) {
- switch (inst->Opcode[optype]) {
- case GL_ADD_ATI:
- if (!optype)
- for (i = 0; i < 3; i++) {
- dst[optype][i] =
- src[optype][0][i] + src[optype][1][i];
- }
- else
- dst[optype][3] = src[optype][0][3] + src[optype][1][3];
- break;
- case GL_SUB_ATI:
- if (!optype)
- for (i = 0; i < 3; i++) {
- dst[optype][i] =
- src[optype][0][i] - src[optype][1][i];
- }
- else
- dst[optype][3] = src[optype][0][3] - src[optype][1][3];
- break;
- case GL_MUL_ATI:
- if (!optype)
- for (i = 0; i < 3; i++) {
- dst[optype][i] =
- src[optype][0][i] * src[optype][1][i];
- }
- else
- dst[optype][3] = src[optype][0][3] * src[optype][1][3];
- break;
- case GL_MAD_ATI:
- if (!optype)
- for (i = 0; i < 3; i++) {
- dst[optype][i] =
- src[optype][0][i] * src[optype][1][i] +
- src[optype][2][i];
- }
- else
- dst[optype][3] =
- src[optype][0][3] * src[optype][1][3] +
- src[optype][2][3];
- break;
- case GL_LERP_ATI:
- if (!optype)
- for (i = 0; i < 3; i++) {
- dst[optype][i] =
- src[optype][0][i] * src[optype][1][i] + (1 -
- src
- [optype]
- [0][i]) *
- src[optype][2][i];
- }
- else
- dst[optype][3] =
- src[optype][0][3] * src[optype][1][3] + (1 -
- src[optype]
- [0][3]) *
- src[optype][2][3];
- break;
-
- case GL_MOV_ATI:
- if (!optype)
- for (i = 0; i < 3; i++) {
- dst[optype][i] = src[optype][0][i];
- }
- else
- dst[optype][3] = src[optype][0][3];
- break;
- case GL_CND_ATI:
- if (!optype) {
- for (i = 0; i < 3; i++) {
- dst[optype][i] =
- (src[optype][2][i] >
- 0.5) ? src[optype][0][i] : src[optype][1][i];
- }
- }
- else {
- dst[optype][3] =
- (src[optype][2][3] >
- 0.5) ? src[optype][0][3] : src[optype][1][3];
- }
- break;
-
- case GL_CND0_ATI:
- if (!optype)
- for (i = 0; i < 3; i++) {
- dst[optype][i] =
- (src[optype][2][i] >=
- 0) ? src[optype][0][i] : src[optype][1][i];
- }
- else {
- dst[optype][3] =
- (src[optype][2][3] >=
- 0) ? src[optype][0][3] : src[optype][1][3];
- }
- break;
- case GL_DOT2_ADD_ATI:
- {
- GLfloat result;
-
- /* DOT 2 always uses the source from the color op */
- /* could save recalculation of dot products for alpha inst */
- result = src[0][0][0] * src[0][1][0] +
- src[0][0][1] * src[0][1][1] + src[0][2][2];
- if (!optype) {
- for (i = 0; i < 3; i++) {
- dst[optype][i] = result;
- }
- }
- else
- dst[optype][3] = result;
- }
- break;
- case GL_DOT3_ATI:
- {
- GLfloat result;
-
- /* DOT 3 always uses the source from the color op */
- result = src[0][0][0] * src[0][1][0] +
- src[0][0][1] * src[0][1][1] +
- src[0][0][2] * src[0][1][2];
-
- if (!optype) {
- for (i = 0; i < 3; i++) {
- dst[optype][i] = result;
- }
- }
- else
- dst[optype][3] = result;
- }
- break;
- case GL_DOT4_ATI:
- {
- GLfloat result;
-
- /* DOT 4 always uses the source from the color op */
- result = src[0][0][0] * src[0][1][0] +
- src[0][0][1] * src[0][1][1] +
- src[0][0][2] * src[0][1][2] +
- src[0][0][3] * src[0][1][3];
- if (!optype) {
- for (i = 0; i < 3; i++) {
- dst[optype][i] = result;
- }
- }
- else
- dst[optype][3] = result;
- }
- break;
-
- }
- }
- }
-
- /* write out the destination registers */
- for (optype = 0; optype < 2; optype++) {
- if (inst->Opcode[optype]) {
- dstreg = inst->DstReg[optype].Index;
- dstp = machine->Registers[dstreg - GL_REG_0_ATI];
-
- if ((optype == 0) || ((inst->Opcode[1] != GL_DOT2_ADD_ATI) &&
- (inst->Opcode[1] != GL_DOT3_ATI) && (inst->Opcode[1] != GL_DOT4_ATI)))
- write_dst_addr(optype, inst->DstReg[optype].dstMod,
- inst->DstReg[optype].dstMask, dst[optype],
- dstp);
- else
- write_dst_addr(1, inst->DstReg[0].dstMod, 0, dst[1], dstp);
- }
- }
- }
- }
-}
-
-
-/**
- * Init fragment shader virtual machine state.
- */
-static void
-init_machine(GLcontext * ctx, struct atifs_machine *machine,
- const struct ati_fragment_shader *shader,
- const SWspan *span, GLuint col)
-{
- GLfloat (*inputs)[4] = machine->Inputs;
- GLint i, j;
-
- for (i = 0; i < 6; i++) {
- for (j = 0; j < 4; j++)
- machine->Registers[i][j] = 0.0;
- }
-
- COPY_4V(inputs[ATI_FS_INPUT_PRIMARY], span->array->attribs[FRAG_ATTRIB_COL0][col]);
- COPY_4V(inputs[ATI_FS_INPUT_SECONDARY], span->array->attribs[FRAG_ATTRIB_COL1][col]);
-}
-
-
-
-/**
- * Execute the current ATI shader program, operating on the given span.
- */
-void
-_swrast_exec_fragment_shader(GLcontext * ctx, SWspan *span)
-{
- const struct ati_fragment_shader *shader = ctx->ATIFragmentShader.Current;
- struct atifs_machine machine;
- GLuint i;
-
- /* incoming colors should be floats */
- ASSERT(span->array->ChanType == GL_FLOAT);
-
- for (i = 0; i < span->end; i++) {
- if (span->array->mask[i]) {
- init_machine(ctx, &machine, shader, span, i);
-
- execute_shader(ctx, shader, &machine, span, i);
-
- /* store result color */
- {
- const GLfloat *colOut = machine.Registers[0];
- /*fprintf(stderr,"outputs %f %f %f %f\n",
- colOut[0], colOut[1], colOut[2], colOut[3]); */
- COPY_4V(span->array->attribs[FRAG_ATTRIB_COL0][i], colOut);
- }
- }
- }
-}
+/*
+ * Copyright (C) 2004 David Airlie All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * DAVID AIRLIE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "main/glheader.h"
+#include "main/colormac.h"
+#include "main/macros.h"
+#include "main/atifragshader.h"
+#include "swrast/s_atifragshader.h"
+#include "swrast/s_context.h"
+
+
+/**
+ * State for executing ATI fragment shader.
+ */
+struct atifs_machine
+{
+ GLfloat Registers[6][4]; /** six temporary registers */
+ GLfloat PrevPassRegisters[6][4];
+ GLfloat Inputs[2][4]; /** Primary, secondary input colors */
+};
+
+
+
+/**
+ * Fetch a texel.
+ */
+static void
+fetch_texel(struct gl_context * ctx, const GLfloat texcoord[4], GLfloat lambda,
+ GLuint unit, GLfloat color[4])
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ /* XXX use a float-valued TextureSample routine here!!! */
+ swrast->TextureSample[unit](ctx, ctx->Texture.Unit[unit]._Current,
+ 1, (const GLfloat(*)[4]) texcoord,
+ &lambda, (GLfloat (*)[4]) color);
+}
+
+static void
+apply_swizzle(GLfloat values[4], GLuint swizzle)
+{
+ GLfloat s, t, r, q;
+
+ s = values[0];
+ t = values[1];
+ r = values[2];
+ q = values[3];
+
+ switch (swizzle) {
+ case GL_SWIZZLE_STR_ATI:
+ values[0] = s;
+ values[1] = t;
+ values[2] = r;
+ break;
+ case GL_SWIZZLE_STQ_ATI:
+ values[0] = s;
+ values[1] = t;
+ values[2] = q;
+ break;
+ case GL_SWIZZLE_STR_DR_ATI:
+ values[0] = s / r;
+ values[1] = t / r;
+ values[2] = 1 / r;
+ break;
+ case GL_SWIZZLE_STQ_DQ_ATI:
+/* make sure q is not 0 to avoid problems later with infinite values (texture lookup)? */
+ if (q == 0.0F)
+ q = 0.000000001F;
+ values[0] = s / q;
+ values[1] = t / q;
+ values[2] = 1.0F / q;
+ break;
+ }
+ values[3] = 0.0;
+}
+
+static void
+apply_src_rep(GLint optype, GLuint rep, GLfloat * val)
+{
+ GLint i;
+ GLint start, end;
+ if (!rep)
+ return;
+
+ start = optype ? 3 : 0;
+ end = 4;
+
+ for (i = start; i < end; i++) {
+ switch (rep) {
+ case GL_RED:
+ val[i] = val[0];
+ break;
+ case GL_GREEN:
+ val[i] = val[1];
+ break;
+ case GL_BLUE:
+ val[i] = val[2];
+ break;
+ case GL_ALPHA:
+ val[i] = val[3];
+ break;
+ }
+ }
+}
+
+static void
+apply_src_mod(GLint optype, GLuint mod, GLfloat * val)
+{
+ GLint i;
+ GLint start, end;
+
+ if (!mod)
+ return;
+
+ start = optype ? 3 : 0;
+ end = 4;
+
+ for (i = start; i < end; i++) {
+ if (mod & GL_COMP_BIT_ATI)
+ val[i] = 1 - val[i];
+
+ if (mod & GL_BIAS_BIT_ATI)
+ val[i] = val[i] - 0.5F;
+
+ if (mod & GL_2X_BIT_ATI)
+ val[i] = 2 * val[i];
+
+ if (mod & GL_NEGATE_BIT_ATI)
+ val[i] = -val[i];
+ }
+}
+
+static void
+apply_dst_mod(GLuint optype, GLuint mod, GLfloat * val)
+{
+ GLint i;
+ GLint has_sat = mod & GL_SATURATE_BIT_ATI;
+ GLint start, end;
+
+ mod &= ~GL_SATURATE_BIT_ATI;
+
+ start = optype ? 3 : 0;
+ end = optype ? 4 : 3;
+
+ for (i = start; i < end; i++) {
+ switch (mod) {
+ case GL_2X_BIT_ATI:
+ val[i] = 2 * val[i];
+ break;
+ case GL_4X_BIT_ATI:
+ val[i] = 4 * val[i];
+ break;
+ case GL_8X_BIT_ATI:
+ val[i] = 8 * val[i];
+ break;
+ case GL_HALF_BIT_ATI:
+ val[i] = val[i] * 0.5F;
+ break;
+ case GL_QUARTER_BIT_ATI:
+ val[i] = val[i] * 0.25F;
+ break;
+ case GL_EIGHTH_BIT_ATI:
+ val[i] = val[i] * 0.125F;
+ break;
+ }
+
+ if (has_sat) {
+ if (val[i] < 0.0F)
+ val[i] = 0.0F;
+ else if (val[i] > 1.0F)
+ val[i] = 1.0F;
+ }
+ else {
+ if (val[i] < -8.0F)
+ val[i] = -8.0F;
+ else if (val[i] > 8.0F)
+ val[i] = 8.0F;
+ }
+ }
+}
+
+
+static void
+write_dst_addr(GLuint optype, GLuint mod, GLuint mask, GLfloat * src,
+ GLfloat * dst)
+{
+ GLint i;
+ apply_dst_mod(optype, mod, src);
+
+ if (optype == ATI_FRAGMENT_SHADER_COLOR_OP) {
+ if (mask) {
+ if (mask & GL_RED_BIT_ATI)
+ dst[0] = src[0];
+
+ if (mask & GL_GREEN_BIT_ATI)
+ dst[1] = src[1];
+
+ if (mask & GL_BLUE_BIT_ATI)
+ dst[2] = src[2];
+ }
+ else {
+ for (i = 0; i < 3; i++)
+ dst[i] = src[i];
+ }
+ }
+ else
+ dst[3] = src[3];
+}
+
+static void
+finish_pass(struct atifs_machine *machine)
+{
+ GLint i;
+
+ for (i = 0; i < 6; i++) {
+ COPY_4V(machine->PrevPassRegisters[i], machine->Registers[i]);
+ }
+}
+
+struct ati_fs_opcode_st ati_fs_opcodes[] = {
+ {GL_ADD_ATI, 2},
+ {GL_SUB_ATI, 2},
+ {GL_MUL_ATI, 2},
+ {GL_MAD_ATI, 3},
+ {GL_LERP_ATI, 3},
+ {GL_MOV_ATI, 1},
+ {GL_CND_ATI, 3},
+ {GL_CND0_ATI, 3},
+ {GL_DOT2_ADD_ATI, 3},
+ {GL_DOT3_ATI, 2},
+ {GL_DOT4_ATI, 2}
+};
+
+
+
+static void
+handle_pass_op(struct atifs_machine *machine, struct atifs_setupinst *texinst,
+ const SWspan *span, GLuint column, GLuint idx)
+{
+ GLuint swizzle = texinst->swizzle;
+ GLuint pass_tex = texinst->src;
+
+ if (pass_tex >= GL_TEXTURE0_ARB && pass_tex <= GL_TEXTURE7_ARB) {
+ pass_tex -= GL_TEXTURE0_ARB;
+ COPY_4V(machine->Registers[idx],
+ span->array->attribs[FRAG_ATTRIB_TEX0 + pass_tex][column]);
+ }
+ else if (pass_tex >= GL_REG_0_ATI && pass_tex <= GL_REG_5_ATI) {
+ pass_tex -= GL_REG_0_ATI;
+ COPY_4V(machine->Registers[idx], machine->PrevPassRegisters[pass_tex]);
+ }
+ apply_swizzle(machine->Registers[idx], swizzle);
+
+}
+
+static void
+handle_sample_op(struct gl_context * ctx, struct atifs_machine *machine,
+ struct atifs_setupinst *texinst, const SWspan *span,
+ GLuint column, GLuint idx)
+{
+/* sample from unit idx using texinst->src as coords */
+ GLuint swizzle = texinst->swizzle;
+ GLuint coord_source = texinst->src;
+ GLfloat tex_coords[4] = { 0 };
+
+ if (coord_source >= GL_TEXTURE0_ARB && coord_source <= GL_TEXTURE7_ARB) {
+ coord_source -= GL_TEXTURE0_ARB;
+ COPY_4V(tex_coords,
+ span->array->attribs[FRAG_ATTRIB_TEX0 + coord_source][column]);
+ }
+ else if (coord_source >= GL_REG_0_ATI && coord_source <= GL_REG_5_ATI) {
+ coord_source -= GL_REG_0_ATI;
+ COPY_4V(tex_coords, machine->PrevPassRegisters[coord_source]);
+ }
+ apply_swizzle(tex_coords, swizzle);
+ fetch_texel(ctx, tex_coords, 0.0F, idx, machine->Registers[idx]);
+}
+
+#define SETUP_SRC_REG(optype, i, x) \
+do { \
+ COPY_4V(src[optype][i], x); \
+} while (0)
+
+
+
+/**
+ * Execute the given fragment shader.
+ * NOTE: we do everything in single-precision floating point
+ * \param ctx - rendering context
+ * \param shader - the shader to execute
+ * \param machine - virtual machine state
+ * \param span - the SWspan we're operating on
+ * \param column - which pixel [i] we're operating on in the span
+ */
+static void
+execute_shader(struct gl_context *ctx, const struct ati_fragment_shader *shader,
+ struct atifs_machine *machine, const SWspan *span,
+ GLuint column)
+{
+ GLuint pc;
+ struct atifs_instruction *inst;
+ struct atifs_setupinst *texinst;
+ GLint optype;
+ GLuint i;
+ GLint j, pass;
+ GLint dstreg;
+ GLfloat src[2][3][4];
+ GLfloat zeros[4] = { 0.0, 0.0, 0.0, 0.0 };
+ GLfloat ones[4] = { 1.0, 1.0, 1.0, 1.0 };
+ GLfloat dst[2][4], *dstp;
+
+ for (pass = 0; pass < shader->NumPasses; pass++) {
+ if (pass > 0)
+ finish_pass(machine);
+ for (j = 0; j < MAX_NUM_FRAGMENT_REGISTERS_ATI; j++) {
+ texinst = &shader->SetupInst[pass][j];
+ if (texinst->Opcode == ATI_FRAGMENT_SHADER_PASS_OP)
+ handle_pass_op(machine, texinst, span, column, j);
+ else if (texinst->Opcode == ATI_FRAGMENT_SHADER_SAMPLE_OP)
+ handle_sample_op(ctx, machine, texinst, span, column, j);
+ }
+
+ for (pc = 0; pc < shader->numArithInstr[pass]; pc++) {
+ inst = &shader->Instructions[pass][pc];
+
+ /* setup the source registers for color and alpha ops */
+ for (optype = 0; optype < 2; optype++) {
+ for (i = 0; i < inst->ArgCount[optype]; i++) {
+ GLint index = inst->SrcReg[optype][i].Index;
+
+ if (index >= GL_REG_0_ATI && index <= GL_REG_5_ATI)
+ SETUP_SRC_REG(optype, i,
+ machine->Registers[index - GL_REG_0_ATI]);
+ else if (index >= GL_CON_0_ATI && index <= GL_CON_7_ATI) {
+ if (shader->LocalConstDef & (1 << (index - GL_CON_0_ATI))) {
+ SETUP_SRC_REG(optype, i,
+ shader->Constants[index - GL_CON_0_ATI]);
+ } else {
+ SETUP_SRC_REG(optype, i,
+ ctx->ATIFragmentShader.GlobalConstants[index - GL_CON_0_ATI]);
+ }
+ }
+ else if (index == GL_ONE)
+ SETUP_SRC_REG(optype, i, ones);
+ else if (index == GL_ZERO)
+ SETUP_SRC_REG(optype, i, zeros);
+ else if (index == GL_PRIMARY_COLOR_EXT)
+ SETUP_SRC_REG(optype, i,
+ machine->Inputs[ATI_FS_INPUT_PRIMARY]);
+ else if (index == GL_SECONDARY_INTERPOLATOR_ATI)
+ SETUP_SRC_REG(optype, i,
+ machine->Inputs[ATI_FS_INPUT_SECONDARY]);
+
+ apply_src_rep(optype, inst->SrcReg[optype][i].argRep,
+ src[optype][i]);
+ apply_src_mod(optype, inst->SrcReg[optype][i].argMod,
+ src[optype][i]);
+ }
+ }
+
+ /* Execute the operations - color then alpha */
+ for (optype = 0; optype < 2; optype++) {
+ if (inst->Opcode[optype]) {
+ switch (inst->Opcode[optype]) {
+ case GL_ADD_ATI:
+ if (!optype)
+ for (i = 0; i < 3; i++) {
+ dst[optype][i] =
+ src[optype][0][i] + src[optype][1][i];
+ }
+ else
+ dst[optype][3] = src[optype][0][3] + src[optype][1][3];
+ break;
+ case GL_SUB_ATI:
+ if (!optype)
+ for (i = 0; i < 3; i++) {
+ dst[optype][i] =
+ src[optype][0][i] - src[optype][1][i];
+ }
+ else
+ dst[optype][3] = src[optype][0][3] - src[optype][1][3];
+ break;
+ case GL_MUL_ATI:
+ if (!optype)
+ for (i = 0; i < 3; i++) {
+ dst[optype][i] =
+ src[optype][0][i] * src[optype][1][i];
+ }
+ else
+ dst[optype][3] = src[optype][0][3] * src[optype][1][3];
+ break;
+ case GL_MAD_ATI:
+ if (!optype)
+ for (i = 0; i < 3; i++) {
+ dst[optype][i] =
+ src[optype][0][i] * src[optype][1][i] +
+ src[optype][2][i];
+ }
+ else
+ dst[optype][3] =
+ src[optype][0][3] * src[optype][1][3] +
+ src[optype][2][3];
+ break;
+ case GL_LERP_ATI:
+ if (!optype)
+ for (i = 0; i < 3; i++) {
+ dst[optype][i] =
+ src[optype][0][i] * src[optype][1][i] + (1 -
+ src
+ [optype]
+ [0][i]) *
+ src[optype][2][i];
+ }
+ else
+ dst[optype][3] =
+ src[optype][0][3] * src[optype][1][3] + (1 -
+ src[optype]
+ [0][3]) *
+ src[optype][2][3];
+ break;
+
+ case GL_MOV_ATI:
+ if (!optype)
+ for (i = 0; i < 3; i++) {
+ dst[optype][i] = src[optype][0][i];
+ }
+ else
+ dst[optype][3] = src[optype][0][3];
+ break;
+ case GL_CND_ATI:
+ if (!optype) {
+ for (i = 0; i < 3; i++) {
+ dst[optype][i] =
+ (src[optype][2][i] >
+ 0.5) ? src[optype][0][i] : src[optype][1][i];
+ }
+ }
+ else {
+ dst[optype][3] =
+ (src[optype][2][3] >
+ 0.5) ? src[optype][0][3] : src[optype][1][3];
+ }
+ break;
+
+ case GL_CND0_ATI:
+ if (!optype)
+ for (i = 0; i < 3; i++) {
+ dst[optype][i] =
+ (src[optype][2][i] >=
+ 0) ? src[optype][0][i] : src[optype][1][i];
+ }
+ else {
+ dst[optype][3] =
+ (src[optype][2][3] >=
+ 0) ? src[optype][0][3] : src[optype][1][3];
+ }
+ break;
+ case GL_DOT2_ADD_ATI:
+ {
+ GLfloat result;
+
+ /* DOT 2 always uses the source from the color op */
+ /* could save recalculation of dot products for alpha inst */
+ result = src[0][0][0] * src[0][1][0] +
+ src[0][0][1] * src[0][1][1] + src[0][2][2];
+ if (!optype) {
+ for (i = 0; i < 3; i++) {
+ dst[optype][i] = result;
+ }
+ }
+ else
+ dst[optype][3] = result;
+ }
+ break;
+ case GL_DOT3_ATI:
+ {
+ GLfloat result;
+
+ /* DOT 3 always uses the source from the color op */
+ result = src[0][0][0] * src[0][1][0] +
+ src[0][0][1] * src[0][1][1] +
+ src[0][0][2] * src[0][1][2];
+
+ if (!optype) {
+ for (i = 0; i < 3; i++) {
+ dst[optype][i] = result;
+ }
+ }
+ else
+ dst[optype][3] = result;
+ }
+ break;
+ case GL_DOT4_ATI:
+ {
+ GLfloat result;
+
+ /* DOT 4 always uses the source from the color op */
+ result = src[0][0][0] * src[0][1][0] +
+ src[0][0][1] * src[0][1][1] +
+ src[0][0][2] * src[0][1][2] +
+ src[0][0][3] * src[0][1][3];
+ if (!optype) {
+ for (i = 0; i < 3; i++) {
+ dst[optype][i] = result;
+ }
+ }
+ else
+ dst[optype][3] = result;
+ }
+ break;
+
+ }
+ }
+ }
+
+ /* write out the destination registers */
+ for (optype = 0; optype < 2; optype++) {
+ if (inst->Opcode[optype]) {
+ dstreg = inst->DstReg[optype].Index;
+ dstp = machine->Registers[dstreg - GL_REG_0_ATI];
+
+ if ((optype == 0) || ((inst->Opcode[1] != GL_DOT2_ADD_ATI) &&
+ (inst->Opcode[1] != GL_DOT3_ATI) && (inst->Opcode[1] != GL_DOT4_ATI)))
+ write_dst_addr(optype, inst->DstReg[optype].dstMod,
+ inst->DstReg[optype].dstMask, dst[optype],
+ dstp);
+ else
+ write_dst_addr(1, inst->DstReg[0].dstMod, 0, dst[1], dstp);
+ }
+ }
+ }
+ }
+}
+
+
+/**
+ * Init fragment shader virtual machine state.
+ */
+static void
+init_machine(struct gl_context * ctx, struct atifs_machine *machine,
+ const struct ati_fragment_shader *shader,
+ const SWspan *span, GLuint col)
+{
+ GLfloat (*inputs)[4] = machine->Inputs;
+ GLint i, j;
+
+ for (i = 0; i < 6; i++) {
+ for (j = 0; j < 4; j++)
+ machine->Registers[i][j] = 0.0;
+ }
+
+ COPY_4V(inputs[ATI_FS_INPUT_PRIMARY], span->array->attribs[FRAG_ATTRIB_COL0][col]);
+ COPY_4V(inputs[ATI_FS_INPUT_SECONDARY], span->array->attribs[FRAG_ATTRIB_COL1][col]);
+}
+
+
+
+/**
+ * Execute the current ATI shader program, operating on the given span.
+ */
+void
+_swrast_exec_fragment_shader(struct gl_context * ctx, SWspan *span)
+{
+ const struct ati_fragment_shader *shader = ctx->ATIFragmentShader.Current;
+ struct atifs_machine machine;
+ GLuint i;
+
+ /* incoming colors should be floats */
+ ASSERT(span->array->ChanType == GL_FLOAT);
+
+ for (i = 0; i < span->end; i++) {
+ if (span->array->mask[i]) {
+ init_machine(ctx, &machine, shader, span, i);
+
+ execute_shader(ctx, shader, &machine, span, i);
+
+ /* store result color */
+ {
+ const GLfloat *colOut = machine.Registers[0];
+ /*fprintf(stderr,"outputs %f %f %f %f\n",
+ colOut[0], colOut[1], colOut[2], colOut[3]); */
+ COPY_4V(span->array->attribs[FRAG_ATTRIB_COL0][i], colOut);
+ }
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-04 10:40:42 +0000