From 67d2d3ba433a43bbf03b80c1d7e140e1fc9de2f6 Mon Sep 17 00:00:00 2001
From: Ilia Mirkin
Date: Thu, 10 Sep 2015 21:44:45 -0400
Subject: [PATCH] st/mesa: emit TXQS, support ARB_shader_texture_image_samples
The image component of the ext is a no-op since there is no image support
in gallium (yet).
Signed-off-by: Ilia Mirkin
Reviewed-by: Edward O'Callaghan
Reviewed-by: Brian Paul
---
docs/GL3.txt | 2 +-
docs/relnotes/11.1.0.html | 2 +-
src/mesa/state_tracker/st_extensions.c | 1 +
src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 6 +++++-
4 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/docs/GL3.txt b/docs/GL3.txt
index 97f642bd135..e0a8a371c59 100644
--- a/docs/GL3.txt
+++ b/docs/GL3.txt
@@ -194,7 +194,7 @@ GL 4.5, GLSL 4.50:
GL_ARB_derivative_control DONE (i965, nv50, nvc0, r600, radeonsi)
GL_ARB_direct_state_access DONE (all drivers)
GL_ARB_get_texture_sub_image DONE (all drivers)
- GL_ARB_shader_texture_image_samples DONE (i965)
+ GL_ARB_shader_texture_image_samples DONE (i965, nv50, nvc0, r600)
GL_ARB_texture_barrier DONE (nv50, nvc0, r600, radeonsi)
GL_KHR_context_flush_control DONE (all - but needs GLX/EGL extension to be useful)
GL_KHR_robust_buffer_access_behavior not started
diff --git a/docs/relnotes/11.1.0.html b/docs/relnotes/11.1.0.html
index 528905f772b..6abdf7ad855 100644
--- a/docs/relnotes/11.1.0.html
+++ b/docs/relnotes/11.1.0.html
@@ -44,7 +44,7 @@ Note: some of the new features are only available with certain drivers.
-- GL_ARB_shader_texture_image_samples on i965
+- GL_ARB_shader_texture_image_samples on i965, nv50, nvc0, r600
- GL_ARB_texture_query_lod on softpipe
- GL_ARB_gpu_shader_fp64 on r600 for Cypress/Cayman/Aruba chips
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 884761c6c30..e2902923cb7 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -449,6 +449,7 @@ void st_init_extensions(struct pipe_screen *screen,
{ o(ARB_point_sprite), PIPE_CAP_POINT_SPRITE },
{ o(ARB_seamless_cube_map), PIPE_CAP_SEAMLESS_CUBE_MAP },
{ o(ARB_shader_stencil_export), PIPE_CAP_SHADER_STENCIL_EXPORT },
+ { o(ARB_shader_texture_image_samples), PIPE_CAP_TGSI_TXQS },
{ o(ARB_shader_texture_lod), PIPE_CAP_SM3 },
{ o(ARB_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP },
{ o(ARB_texture_buffer_object), PIPE_CAP_TEXTURE_BUFFER_OBJECTS },
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 625c4e9c8a6..c3a8c119b1e 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -3229,7 +3229,8 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
opcode = TGSI_OPCODE_LODQ;
break;
case ir_texture_samples:
- unreachable("unexpected texture op");
+ opcode = TGSI_OPCODE_TXQS;
+ break;
}
if (ir->projector) {
@@ -3339,6 +3340,8 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
emit_asm(ir, TGSI_OPCODE_MOV, result_dst, levels_src);
} else
inst = emit_asm(ir, opcode, result_dst, lod_info);
+ } else if (opcode == TGSI_OPCODE_TXQS) {
+ inst = emit_asm(ir, opcode, result_dst);
} else if (opcode == TGSI_OPCODE_TXF) {
inst = emit_asm(ir, opcode, result_dst, coord);
} else if (opcode == TGSI_OPCODE_TXL2 || opcode == TGSI_OPCODE_TXB2) {
@@ -5030,6 +5033,7 @@ compile_tgsi_instruction(struct st_translate *t,
case TGSI_OPCODE_TXL:
case TGSI_OPCODE_TXP:
case TGSI_OPCODE_TXQ:
+ case TGSI_OPCODE_TXQS:
case TGSI_OPCODE_TXF:
case TGSI_OPCODE_TEX2:
case TGSI_OPCODE_TXB2:
--
2.30.2