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Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_pstipple.c')
-rw-r--r--mesalib/src/gallium/auxiliary/util/u_pstipple.c228
1 files changed, 76 insertions, 152 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_pstipple.c b/mesalib/src/gallium/auxiliary/util/u_pstipple.c
index 509f815c5..1e1ec4a98 100644
--- a/mesalib/src/gallium/auxiliary/util/u_pstipple.c
+++ b/mesalib/src/gallium/auxiliary/util/u_pstipple.c
@@ -180,9 +180,7 @@ struct pstip_transform_context {
int maxInput;
uint samplersUsed; /**< bitfield of samplers used */
int freeSampler; /** an available sampler for the pstipple */
- int texTemp; /**< temp registers */
int numImmed;
- boolean firstInstruction;
uint coordOrigin;
};
@@ -243,7 +241,7 @@ free_bit(uint bitfield)
/**
- * TGSI instruction transform callback.
+ * TGSI transform prolog
* Before the first instruction, insert our new code to sample the
* stipple texture (using the fragment coord register) then kill the
* fragment if the stipple texture bit is off.
@@ -256,165 +254,95 @@ free_bit(uint bitfield)
* [...original code...]
*/
static void
-pstip_transform_inst(struct tgsi_transform_context *ctx,
- struct tgsi_full_instruction *inst)
+pstip_transform_prolog(struct tgsi_transform_context *ctx)
{
struct pstip_transform_context *pctx =
(struct pstip_transform_context *) ctx;
+ int wincoordInput;
+ int texTemp;
+
+ /* find free texture sampler */
+ pctx->freeSampler = free_bit(pctx->samplersUsed);
+ if (pctx->freeSampler >= PIPE_MAX_SAMPLERS)
+ pctx->freeSampler = PIPE_MAX_SAMPLERS - 1;
+
+ if (pctx->wincoordInput < 0)
+ wincoordInput = pctx->maxInput + 1;
+ else
+ wincoordInput = pctx->wincoordInput;
+
+ if (pctx->wincoordInput < 0) {
+ /* declare new position input reg */
+ tgsi_transform_input_decl(ctx, wincoordInput,
+ TGSI_SEMANTIC_POSITION, 1,
+ TGSI_INTERPOLATE_LINEAR);
+ }
- if (pctx->firstInstruction) {
- /* emit our new declarations before the first instruction */
-
- struct tgsi_full_declaration decl;
- struct tgsi_full_instruction newInst;
- uint i;
- int wincoordInput;
-
- /* find free texture sampler */
- pctx->freeSampler = free_bit(pctx->samplersUsed);
- if (pctx->freeSampler >= PIPE_MAX_SAMPLERS)
- pctx->freeSampler = PIPE_MAX_SAMPLERS - 1;
-
- if (pctx->wincoordInput < 0)
- wincoordInput = pctx->maxInput + 1;
- else
- wincoordInput = pctx->wincoordInput;
-
- /* find one free temp register */
- for (i = 0; i < 32; i++) {
- if ((pctx->tempsUsed & (1 << i)) == 0) {
- /* found a free temp */
- if (pctx->texTemp < 0)
- pctx->texTemp = i;
- else
- break;
- }
- }
- assert(pctx->texTemp >= 0);
-
- if (pctx->wincoordInput < 0) {
- /* declare new position input reg */
- decl = tgsi_default_full_declaration();
- decl.Declaration.File = TGSI_FILE_INPUT;
- decl.Declaration.Interpolate = 1;
- decl.Declaration.Semantic = 1;
- decl.Semantic.Name = TGSI_SEMANTIC_POSITION;
- decl.Semantic.Index = 0;
- decl.Range.First =
- decl.Range.Last = wincoordInput;
- decl.Interp.Interpolate = TGSI_INTERPOLATE_LINEAR;
- ctx->emit_declaration(ctx, &decl);
- }
+ /* declare new sampler */
+ tgsi_transform_sampler_decl(ctx, pctx->freeSampler);
- /* declare new sampler */
- decl = tgsi_default_full_declaration();
- decl.Declaration.File = TGSI_FILE_SAMPLER;
- decl.Range.First =
- decl.Range.Last = pctx->freeSampler;
- ctx->emit_declaration(ctx, &decl);
-
- /* declare new temp regs */
- decl = tgsi_default_full_declaration();
- decl.Declaration.File = TGSI_FILE_TEMPORARY;
- decl.Range.First =
- decl.Range.Last = pctx->texTemp;
- ctx->emit_declaration(ctx, &decl);
-
- /* emit immediate = {1/32, 1/32, 1, 1}
- * The index/position of this immediate will be pctx->numImmed
- */
- {
- static const float value[4] = { 1.0/32, 1.0/32, 1.0, 1.0 };
- struct tgsi_full_immediate immed;
- uint size = 4;
- immed = tgsi_default_full_immediate();
- immed.Immediate.NrTokens = 1 + size; /* one for the token itself */
- immed.u[0].Float = value[0];
- immed.u[1].Float = value[1];
- immed.u[2].Float = value[2];
- immed.u[3].Float = value[3];
- ctx->emit_immediate(ctx, &immed);
- }
-
- pctx->firstInstruction = FALSE;
-
-
- /*
- * Insert new MUL/TEX/KILL_IF instructions at start of program
- * Take gl_FragCoord, divide by 32 (stipple size), sample the
- * texture and kill fragment if needed.
- *
- * We'd like to use non-normalized texcoords to index into a RECT
- * texture, but we can only use REPEAT wrap mode with normalized
- * texcoords. Darn.
- */
-
- /* XXX invert wincoord if origin isn't lower-left... */
-
- /* MUL texTemp, INPUT[wincoord], 1/32; */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_MUL;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = pctx->texTemp;
- newInst.Instruction.NumSrcRegs = 2;
- newInst.Src[0].Register.File = TGSI_FILE_INPUT;
- newInst.Src[0].Register.Index = wincoordInput;
- newInst.Src[1].Register.File = TGSI_FILE_IMMEDIATE;
- newInst.Src[1].Register.Index = pctx->numImmed;
- ctx->emit_instruction(ctx, &newInst);
-
- /* TEX texTemp, texTemp, sampler; */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_TEX;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = pctx->texTemp;
- newInst.Instruction.NumSrcRegs = 2;
- newInst.Instruction.Texture = TRUE;
- newInst.Texture.Texture = TGSI_TEXTURE_2D;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = pctx->texTemp;
- newInst.Src[1].Register.File = TGSI_FILE_SAMPLER;
- newInst.Src[1].Register.Index = pctx->freeSampler;
- ctx->emit_instruction(ctx, &newInst);
-
- /* KILL_IF -texTemp; # if -texTemp < 0, kill fragment */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_KILL_IF;
- newInst.Instruction.NumDstRegs = 0;
- newInst.Instruction.NumSrcRegs = 1;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = pctx->texTemp;
- newInst.Src[0].Register.Negate = 1;
- ctx->emit_instruction(ctx, &newInst);
+ /* Declare temp[0] reg if not already declared.
+ * We can always use temp[0] since this code is before
+ * the rest of the shader.
+ */
+ texTemp = 0;
+ if ((pctx->tempsUsed & (1 << texTemp)) == 0) {
+ tgsi_transform_temp_decl(ctx, texTemp);
}
- /* emit this instruction */
- ctx->emit_instruction(ctx, inst);
+ /* emit immediate = {1/32, 1/32, 1, 1}
+ * The index/position of this immediate will be pctx->numImmed
+ */
+ tgsi_transform_immediate_decl(ctx, 1.0/32.0, 1.0/32.0, 1.0, 1.0);
+
+ /*
+ * Insert new MUL/TEX/KILL_IF instructions at start of program
+ * Take gl_FragCoord, divide by 32 (stipple size), sample the
+ * texture and kill fragment if needed.
+ *
+ * We'd like to use non-normalized texcoords to index into a RECT
+ * texture, but we can only use REPEAT wrap mode with normalized
+ * texcoords. Darn.
+ */
+
+ /* XXX invert wincoord if origin isn't lower-left... */
+
+ /* MUL texTemp, INPUT[wincoord], 1/32; */
+ tgsi_transform_op2_inst(ctx, TGSI_OPCODE_MUL,
+ TGSI_FILE_TEMPORARY, texTemp,
+ TGSI_WRITEMASK_XYZW,
+ TGSI_FILE_INPUT, wincoordInput,
+ TGSI_FILE_IMMEDIATE, pctx->numImmed);
+
+ /* TEX texTemp, texTemp, sampler; */
+ tgsi_transform_tex_2d_inst(ctx,
+ TGSI_FILE_TEMPORARY, texTemp,
+ TGSI_FILE_TEMPORARY, texTemp,
+ pctx->freeSampler);
+
+ /* KILL_IF -texTemp; # if -texTemp < 0, kill fragment */
+ tgsi_transform_kill_inst(ctx,
+ TGSI_FILE_TEMPORARY, texTemp,
+ TGSI_SWIZZLE_W);
}
/**
* Given a fragment shader, return a new fragment shader which
* samples a stipple texture and executes KILL.
+ * \param samplerUnitOut returns the index of the sampler unit which
+ * will be used to sample the stipple texture
*/
-struct pipe_shader_state *
-util_pstipple_create_fragment_shader(struct pipe_context *pipe,
- struct pipe_shader_state *fs,
+struct tgsi_token *
+util_pstipple_create_fragment_shader(const struct tgsi_token *tokens,
unsigned *samplerUnitOut)
{
- struct pipe_shader_state *new_fs;
struct pstip_transform_context transform;
- const uint newLen = tgsi_num_tokens(fs->tokens) + NUM_NEW_TOKENS;
-
- new_fs = MALLOC(sizeof(*new_fs));
- if (!new_fs)
- return NULL;
+ const uint newLen = tgsi_num_tokens(tokens) + NUM_NEW_TOKENS;
+ struct tgsi_token *new_tokens;
- new_fs->tokens = tgsi_alloc_tokens(newLen);
- if (!new_fs->tokens) {
- FREE(new_fs);
+ new_tokens = tgsi_alloc_tokens(newLen);
+ if (!new_tokens) {
return NULL;
}
@@ -423,21 +351,17 @@ util_pstipple_create_fragment_shader(struct pipe_context *pipe,
memset(&transform, 0, sizeof(transform));
transform.wincoordInput = -1;
transform.maxInput = -1;
- transform.texTemp = -1;
- transform.firstInstruction = TRUE;
transform.coordOrigin = TGSI_FS_COORD_ORIGIN_UPPER_LEFT;
- transform.base.transform_instruction = pstip_transform_inst;
+ transform.base.prolog = pstip_transform_prolog;
transform.base.transform_declaration = pstip_transform_decl;
transform.base.transform_immediate = pstip_transform_immed;
- tgsi_scan_shader(fs->tokens, &transform.info);
+ tgsi_scan_shader(tokens, &transform.info);
transform.coordOrigin =
transform.info.properties[TGSI_PROPERTY_FS_COORD_ORIGIN];
- tgsi_transform_shader(fs->tokens,
- (struct tgsi_token *) new_fs->tokens,
- newLen, &transform.base);
+ tgsi_transform_shader(tokens, new_tokens, newLen, &transform.base);
#if 0 /* DEBUG */
tgsi_dump(fs->tokens, 0);
@@ -447,6 +371,6 @@ util_pstipple_create_fragment_shader(struct pipe_context *pipe,
assert(transform.freeSampler < PIPE_MAX_SAMPLERS);
*samplerUnitOut = transform.freeSampler;
- return new_fs;
+ return new_tokens;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 23:22:33 +0000