From: Gert Wollny <gert.wol...@collabora.com>
Correct the array index for TEXTURE_*1D_ARRAY, and TEXTURE_*2D_ARRAY
The standard says the array index is evaluated according to
floor(z + 0.5)
but RNDNE is sufficient also for the test cases were z is close to 1.5
and it is likely to hit 1.5, the corner case were RNDNE gives a result
different from above formula.
v5: - Use RNDNE instead of ADD 0.5 and FLOOR (Ilia Mirkin)
- update commit message
Fixes 325 tests from android/cts/master/gles3-master.txt:
dEQP-GLES3.functional.shaders.texture_functions.texture.*sampler2darray*
dEQP-GLES3.functional.shaders.texture_functions.textureoffset.*sampler2darray*
dEQP-GLES3.functional.shaders.texture_functions.texturelod.sampler2darray*
dEQP-GLES3.functional.shaders.texture_functions.texturelodoffset.*sampler2darray*
dEQP-GLES3.functional.shaders.texture_functions.texturegrad.*sampler2darray*
dEQP-GLES3.functional.shaders.texture_functions.texturegradoffset.*sampler2darray*
dEQP-GLES3.functional.texture.filtering.2d_array.formats.*
dEQP-GLES3.functional.texture.filtering.2d_array.sizes.*
dEQP-GLES3.functional.texture.filtering.2d_array.combinations.*
dEQP-GLES3.functional.texture.shadow.2d_array.*
dEQP-GLES3.functional.texture.vertex.2d_array.*
Signed-off-by: Gert Wollny <gert.wol...@collabora.com>
---
src/gallium/drivers/r600/r600_shader.c | 42 ++++++++++++++++++++++++++++++----
1 file changed, 37 insertions(+), 5 deletions(-)
diff --git a/src/gallium/drivers/r600/r600_shader.c
b/src/gallium/drivers/r600/r600_shader.c
index 6655b000aa..15e35f006c 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -7478,6 +7478,7 @@ static int tgsi_tex(struct r600_shader_ctx *ctx)
int8_t offset_x = 0, offset_y = 0, offset_z = 0;
boolean has_txq_cube_array_z = false;
unsigned sampler_index_mode;
+ int array_index_offset_channel = -1;
if (inst->Instruction.Opcode == TGSI_OPCODE_TXQ &&
((inst->Texture.Texture == TGSI_TEXTURE_CUBE_ARRAY ||
@@ -8273,7 +8274,14 @@ static int tgsi_tex(struct r600_shader_ctx *ctx)
t->src_gpr = ctx->file_offset[inst->TexOffsets[0].File] +
inst->TexOffsets[0].Index;
t->src_sel_x = inst->TexOffsets[0].SwizzleX;
t->src_sel_y = inst->TexOffsets[0].SwizzleY;
- t->src_sel_z = inst->TexOffsets[0].SwizzleZ;
+ if (inst->Texture.Texture == TGSI_TEXTURE_2D_ARRAY ||
+ inst->Texture.Texture == TGSI_TEXTURE_SHADOW2D_ARRAY)
+ /* make sure array index selector is 0, this is just a
safety
+ * precausion because TGSI seems to emit something
strange here */
+ t->src_sel_z = 4;
+ else
+ t->src_sel_z = inst->TexOffsets[0].SwizzleZ;
+
t->src_sel_w = 4;
t->dst_sel_x = 7;
@@ -8429,19 +8437,43 @@ static int tgsi_tex(struct r600_shader_ctx *ctx)
opcode == FETCH_OP_SAMPLE_C_LB) {
/* the array index is read from Y */
tex.coord_type_y = 0;
+ array_index_offset_channel = tex.src_sel_y;
} else {
/* the array index is read from Z */
tex.coord_type_z = 0;
tex.src_sel_z = tex.src_sel_y;
+ array_index_offset_channel = tex.src_sel_z;
}
} else if (inst->Texture.Texture == TGSI_TEXTURE_2D_ARRAY ||
- inst->Texture.Texture == TGSI_TEXTURE_SHADOW2D_ARRAY ||
- ((inst->Texture.Texture == TGSI_TEXTURE_CUBE_ARRAY ||
+ inst->Texture.Texture == TGSI_TEXTURE_SHADOW2D_ARRAY) {
+ tex.coord_type_z = 0;
+ array_index_offset_channel = tex.src_sel_z;
+ } else if ((inst->Texture.Texture == TGSI_TEXTURE_CUBE_ARRAY ||
inst->Texture.Texture == TGSI_TEXTURE_SHADOWCUBE_ARRAY) &&
- (ctx->bc->chip_class >= EVERGREEN)))
- /* the array index is read from Z */
+ (ctx->bc->chip_class >= EVERGREEN))
+ /* the array index is read from Z, coordinate will be corrected
elsewhere */
tex.coord_type_z = 0;
+ /* We have array access to 1D or 2D ARRAY, the coordinates are not int
->
+ * evaluate the array index */
+ if (array_index_offset_channel >= 0 &&
+ opcode != FETCH_OP_LD &&
+ opcode != FETCH_OP_GET_TEXTURE_RESINFO) {
+ memset(&alu, 0, sizeof(struct r600_bytecode_alu));
+ alu.src[0].sel = tex.src_gpr;
+ alu.src[0].chan = array_index_offset_channel;
+ alu.src[0].rel = tex.src_rel;
+ alu.op = ALU_OP1_RNDNE;
+ alu.dst.sel = tex.src_gpr;
+ alu.dst.chan = array_index_offset_channel;
+ alu.dst.rel = tex.src_rel;
+ alu.dst.write = 1;
+ alu.last = 1;
+ r = r600_bytecode_add_alu(ctx->bc, &alu);
+ if (r)
+ return r;
+ }
+
/* mask unused source components */
if (opcode == FETCH_OP_SAMPLE || opcode == FETCH_OP_GATHER4) {
switch (inst->Texture.Texture) {
--
2.16.4
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