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-rw-r--r--src/mesa/drivers/dri/r300/r300_fragprog_common.c14
-rw-r--r--src/mesa/drivers/dri/r300/r300_vertprog.c65
-rw-r--r--src/mesa/drivers/dri/r300/radeon_program.h32
3 files changed, 66 insertions, 45 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_fragprog_common.c b/src/mesa/drivers/dri/r300/r300_fragprog_common.c
index c7914649dd..f5c4c0f4a0 100644
--- a/src/mesa/drivers/dri/r300/r300_fragprog_common.c
+++ b/src/mesa/drivers/dri/r300/r300_fragprog_common.c
@@ -162,6 +162,14 @@ static void insert_WPOS_trailer(struct r300_fragment_program_compiler *compiler)
}
}
+
+/**
+ * Rewrite fragment.fogcoord to use a texture coordinate slot.
+ * Note that fogcoord is forced into an X001 pattern, and this enforcement
+ * is done here.
+ *
+ * See also the counterpart rewriting for vertex programs.
+ */
static void rewriteFog(struct r300_fragment_program_compiler *compiler)
{
struct r300_fragment_program *fp = compiler->fp;
@@ -193,8 +201,12 @@ static void rewriteFog(struct r300_fragment_program_compiler *compiler)
while (inst->Opcode != OPCODE_END) {
const int src_regs = _mesa_num_inst_src_regs(inst->Opcode);
for (i = 0; i < src_regs; ++i) {
- if (inst->SrcReg[i].File == PROGRAM_INPUT && inst->SrcReg[i].Index == FRAG_ATTRIB_FOGC)
+ if (inst->SrcReg[i].File == PROGRAM_INPUT && inst->SrcReg[i].Index == FRAG_ATTRIB_FOGC) {
inst->SrcReg[i].Index = fp->fog_attr;
+ inst->SrcReg[i].Swizzle = combine_swizzles(
+ MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_ZERO, SWIZZLE_ZERO, SWIZZLE_ONE),
+ inst->SrcReg[i].Swizzle);
+ }
}
++inst;
}
diff --git a/src/mesa/drivers/dri/r300/r300_vertprog.c b/src/mesa/drivers/dri/r300/r300_vertprog.c
index 9f807dbc99..c0b116156a 100644
--- a/src/mesa/drivers/dri/r300/r300_vertprog.c
+++ b/src/mesa/drivers/dri/r300/r300_vertprog.c
@@ -74,33 +74,6 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
u_temp_i=VSF_MAX_FRAGMENT_TEMPS-1; \
} while (0)
-static GLuint combineSwizzles(GLuint src, GLuint swz_x, GLuint swz_y, GLuint swz_z, GLuint swz_w)
-{
- GLuint ret = 0;
-
- if (swz_x == SWIZZLE_ZERO || swz_x == SWIZZLE_ONE)
- ret |= swz_x;
- else
- ret |= GET_SWZ(src, swz_x);
-
- if (swz_y == SWIZZLE_ZERO || swz_y == SWIZZLE_ONE)
- ret |= swz_y << 3;
- else
- ret |= GET_SWZ(src, swz_y) << 3;
-
- if (swz_z == SWIZZLE_ZERO || swz_z == SWIZZLE_ONE)
- ret |= swz_z << 6;
- else
- ret |= GET_SWZ(src, swz_z) << 6;
-
- if (swz_w == SWIZZLE_ZERO || swz_w == SWIZZLE_ONE)
- ret |= swz_w << 9;
- else
- ret |= GET_SWZ(src, swz_w) << 9;
-
- return ret;
-}
-
static int r300VertexProgUpdateParams(GLcontext * ctx, struct gl_vertex_program *vp, float *dst)
{
int pi;
@@ -1282,24 +1255,28 @@ static void pos_as_texcoord(struct gl_program *prog, int tex_id)
}
/**
- @TODO
- We can put X001 swizzle only if input components are directly mapped from output components.
- For some insts we need to skip source swizzles and add: MOV OUTPUT[fog_attr].yzw, CONST[0].0001
+ * The fogcoord attribute is special in that only the first component
+ * is relevant, and the remaining components are always fixed (when read
+ * from by the fragment program) to yield an X001 pattern.
+ *
+ * We need to enforce this either in the vertex program or in the fragment
+ * program, and this code chooses not to enforce it in the vertex program.
+ * This is slightly cheaper, as long as the fragment program does not use
+ * weird swizzles.
+ *
+ * And it seems that usually, weird swizzles are not used, so...
+ *
+ * See also the counterpart rewriting for fragment programs.
*/
static void fog_as_texcoord(struct gl_program *prog, int tex_id)
{
struct prog_instruction *vpi;
- int i;
vpi = prog->Instructions;
while (vpi->Opcode != OPCODE_END) {
if (vpi->DstReg.File == PROGRAM_OUTPUT && vpi->DstReg.Index == VERT_RESULT_FOGC) {
vpi->DstReg.Index = VERT_RESULT_TEX0 + tex_id;
- vpi->DstReg.WriteMask = WRITEMASK_XYZW;
-
- for (i = 0; i < _mesa_num_inst_src_regs(vpi->Opcode); ++i) {
- vpi->SrcReg[i].Swizzle = combineSwizzles(vpi->SrcReg[i].Swizzle, SWIZZLE_X, SWIZZLE_ZERO, SWIZZLE_ZERO, SWIZZLE_ONE);
- }
+ vpi->DstReg.WriteMask = WRITEMASK_X;
}
++vpi;
@@ -1329,7 +1306,7 @@ static int translateDP3(struct gl_program *prog, int pos)
inst = &prog->Instructions[pos];
inst->Opcode = OPCODE_DP4;
- inst->SrcReg[0].Swizzle = combineSwizzles(inst->SrcReg[0].Swizzle, SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_ZERO);
+ inst->SrcReg[0].Swizzle = combine_swizzles4(inst->SrcReg[0].Swizzle, SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_ZERO);
return 0;
}
@@ -1341,7 +1318,7 @@ static int translateDPH(struct gl_program *prog, int pos)
inst = &prog->Instructions[pos];
inst->Opcode = OPCODE_DP4;
- inst->SrcReg[0].Swizzle = combineSwizzles(inst->SrcReg[0].Swizzle, SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_ONE);
+ inst->SrcReg[0].Swizzle = combine_swizzles4(inst->SrcReg[0].Swizzle, SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_ONE);
return 0;
}
@@ -1409,13 +1386,13 @@ static int translateXPD(struct gl_program *prog, int pos)
inst->Opcode = OPCODE_MUL;
inst->DstReg.File = PROGRAM_TEMPORARY;
inst->DstReg.Index = tmp_idx;
- inst->SrcReg[0].Swizzle = combineSwizzles(inst->SrcReg[0].Swizzle, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_X, SWIZZLE_W);
- inst->SrcReg[1].Swizzle = combineSwizzles(inst->SrcReg[1].Swizzle, SWIZZLE_Z, SWIZZLE_X, SWIZZLE_Y, SWIZZLE_W);
+ inst->SrcReg[0].Swizzle = combine_swizzles4(inst->SrcReg[0].Swizzle, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_X, SWIZZLE_W);
+ inst->SrcReg[1].Swizzle = combine_swizzles4(inst->SrcReg[1].Swizzle, SWIZZLE_Z, SWIZZLE_X, SWIZZLE_Y, SWIZZLE_W);
++inst;
inst->Opcode = OPCODE_MAD;
- inst->SrcReg[0].Swizzle = combineSwizzles(inst->SrcReg[0].Swizzle, SWIZZLE_Z, SWIZZLE_X, SWIZZLE_Y, SWIZZLE_W);
- inst->SrcReg[1].Swizzle = combineSwizzles(inst->SrcReg[1].Swizzle, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_X, SWIZZLE_W);
+ inst->SrcReg[0].Swizzle = combine_swizzles4(inst->SrcReg[0].Swizzle, SWIZZLE_Z, SWIZZLE_X, SWIZZLE_Y, SWIZZLE_W);
+ inst->SrcReg[1].Swizzle = combine_swizzles4(inst->SrcReg[1].Swizzle, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_X, SWIZZLE_W);
inst->SrcReg[1].Negate ^= NEGATE_XYZW;
inst->SrcReg[2].File = PROGRAM_TEMPORARY;
inst->SrcReg[2].Index = tmp_idx;
@@ -1768,12 +1745,12 @@ void r300SetupVertexProgram(r300ContextPtr rmesa)
struct r300_vertex_program *prog = rmesa->selected_vp;
int inst_count = 0;
int param_count = 0;
-
+
/* Reset state, in case we don't use something */
((drm_r300_cmd_header_t *) rmesa->hw.vpp.cmd)->vpu.count = 0;
((drm_r300_cmd_header_t *) rmesa->hw.vpi.cmd)->vpu.count = 0;
((drm_r300_cmd_header_t *) rmesa->hw.vps.cmd)->vpu.count = 0;
-
+
R300_STATECHANGE(rmesa, vpp);
param_count = r300VertexProgUpdateParams(ctx, prog->Base, (float *)&rmesa->hw.vpp.cmd[R300_VPP_PARAM_0]);
bump_vpu_count(rmesa->hw.vpp.cmd, param_count);
diff --git a/src/mesa/drivers/dri/r300/radeon_program.h b/src/mesa/drivers/dri/r300/radeon_program.h
index b411f69bc8..88474d43a2 100644
--- a/src/mesa/drivers/dri/r300/radeon_program.h
+++ b/src/mesa/drivers/dri/r300/radeon_program.h
@@ -52,6 +52,38 @@ enum {
#define SWIZZLE_0000 MAKE_SWIZZLE4(SWIZZLE_ZERO, SWIZZLE_ZERO, SWIZZLE_ZERO, SWIZZLE_ZERO)
#define SWIZZLE_1111 MAKE_SWIZZLE4(SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE)
+static inline GLuint get_swz(GLuint swz, GLuint idx)
+{
+ if (idx & 0x4)
+ return idx;
+ return GET_SWZ(swz, idx);
+}
+
+static inline GLuint combine_swizzles4(GLuint src, GLuint swz_x, GLuint swz_y, GLuint swz_z, GLuint swz_w)
+{
+ GLuint ret = 0;
+
+ ret |= get_swz(src, swz_x);
+ ret |= get_swz(src, swz_y) << 3;
+ ret |= get_swz(src, swz_z) << 6;
+ ret |= get_swz(src, swz_w) << 9;
+
+ return ret;
+}
+
+static inline GLuint combine_swizzles(GLuint src, GLuint swz)
+{
+ GLuint ret = 0;
+
+ ret |= get_swz(src, GET_SWZ(swz, SWIZZLE_X));
+ ret |= get_swz(src, GET_SWZ(swz, SWIZZLE_Y)) << 3;
+ ret |= get_swz(src, GET_SWZ(swz, SWIZZLE_Z)) << 6;
+ ret |= get_swz(src, GET_SWZ(swz, SWIZZLE_W)) << 9;
+
+ return ret;
+}
+
+
/**
* Transformation context that is passed to local transformations.
*
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-12 11:07:44 +0000