r600g: cleanup MSAA texture support checking

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

7 files changed, 21 insertions, 72 deletions

diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c
index 4eb9768..f49c595 100644
--- a/src/gallium/drivers/r600/evergreen_state.c
+++ b/src/gallium/drivers/r600/evergreen_state.c
@@ -1219,7 +1219,7 @@ evergreen_create_sampler_view_custom(struct pipe_context *ctx,
 	view->tex_resource_words[2] = (surflevel[0].offset + r600_resource_va(ctx->screen, texture)) >> 8;
 
 	/* TEX_RESOURCE_WORD3.MIP_ADDRESS */
-	if (texture->nr_samples > 1 && rscreen->msaa_texture_support == MSAA_TEXTURE_COMPRESSED) {
+	if (texture->nr_samples > 1 && rscreen->has_compressed_msaa_texturing) {
 		if (tmp->is_depth) {
 			/* disable FMASK (0 = disabled) */
 			view->tex_resource_words[3] = 0;
@@ -3537,21 +3537,13 @@ void *evergreen_create_resolve_blend(struct r600_context *rctx)
 void *evergreen_create_decompress_blend(struct r600_context *rctx)
 {
 	struct pipe_blend_state blend;
+	unsigned mode = rctx->screen->has_compressed_msaa_texturing ?
+			V_028808_CB_FMASK_DECOMPRESS : V_028808_CB_DECOMPRESS;
 
 	memset(&blend, 0, sizeof(blend));
 	blend.independent_blend_enable = true;
 	blend.rt[0].colormask = 0xf;
-	return evergreen_create_blend_state_mode(&rctx->context, &blend, V_028808_CB_DECOMPRESS);
-}
-
-void *evergreen_create_fmask_decompress_blend(struct r600_context *rctx)
-{
-	struct pipe_blend_state blend;
-
-	memset(&blend, 0, sizeof(blend));
-	blend.independent_blend_enable = true;
-	blend.rt[0].colormask = 0xf;
-	return evergreen_create_blend_state_mode(&rctx->context, &blend, V_028808_CB_FMASK_DECOMPRESS);
+	return evergreen_create_blend_state_mode(&rctx->context, &blend, mode);
 }
 
 void *evergreen_create_db_flush_dsa(struct r600_context *rctx)
diff --git a/src/gallium/drivers/r600/r600_asm.c b/src/gallium/drivers/r600/r600_asm.c
index df0376a..08fe24e 100644
--- a/src/gallium/drivers/r600/r600_asm.c
+++ b/src/gallium/drivers/r600/r600_asm.c
@@ -126,7 +126,7 @@ static unsigned stack_entry_size(enum radeon_family chip) {
 void r600_bytecode_init(struct r600_bytecode *bc,
 			enum chip_class chip_class,
 			enum radeon_family family,
-			enum r600_msaa_texture_mode msaa_texture_mode)
+			bool has_compressed_msaa_texturing)
 {
 	static unsigned next_shader_id = 0;
 
@@ -143,7 +143,7 @@ void r600_bytecode_init(struct r600_bytecode *bc,
 
 	LIST_INITHEAD(&bc->cf);
 	bc->chip_class = chip_class;
-	bc->msaa_texture_mode = msaa_texture_mode;
+	bc->has_compressed_msaa_texturing = has_compressed_msaa_texturing;
 	bc->stack.entry_size = stack_entry_size(family);
 }
 
@@ -2287,7 +2287,7 @@ void *r600_create_vertex_fetch_shader(struct pipe_context *ctx,
 
 	memset(&bc, 0, sizeof(bc));
 	r600_bytecode_init(&bc, rctx->chip_class, rctx->family,
-			   rctx->screen->msaa_texture_support);
+			   rctx->screen->has_compressed_msaa_texturing);
 
 	bc.isa = rctx->isa;
 
diff --git a/src/gallium/drivers/r600/r600_asm.h b/src/gallium/drivers/r600/r600_asm.h
index bbebaec..6ab5dac 100644
--- a/src/gallium/drivers/r600/r600_asm.h
+++ b/src/gallium/drivers/r600/r600_asm.h
@@ -195,7 +195,7 @@ struct r600_stack_info {
 
 struct r600_bytecode {
 	enum chip_class			chip_class;
-	enum r600_msaa_texture_mode	msaa_texture_mode;
+	bool				has_compressed_msaa_texturing;
 	int				type;
 	struct list_head		cf;
 	struct r600_bytecode_cf		*cf_last;
@@ -225,7 +225,7 @@ int eg_bytecode_cf_build(struct r600_bytecode *bc, struct r600_bytecode_cf *cf);
 void r600_bytecode_init(struct r600_bytecode *bc,
 			enum chip_class chip_class,
 			enum radeon_family family,
-			enum r600_msaa_texture_mode msaa_texture_mode);
+			bool has_compressed_msaa_texturing);
 void r600_bytecode_clear(struct r600_bytecode *bc);
 int r600_bytecode_add_alu(struct r600_bytecode *bc,
 		const struct r600_bytecode_alu *alu);
diff --git a/src/gallium/drivers/r600/r600_blit.c b/src/gallium/drivers/r600/r600_blit.c
index 7d32eef..058bf81 100644
--- a/src/gallium/drivers/r600/r600_blit.c
+++ b/src/gallium/drivers/r600/r600_blit.c
@@ -290,25 +290,10 @@ static void r600_blit_decompress_color(struct pipe_context *ctx,
 {
 	struct r600_context *rctx = (struct r600_context *)ctx;
 	unsigned layer, level, checked_last_layer, max_layer;
-	void *blend_decompress;
 
 	if (!rtex->dirty_level_mask)
 		return;
 
-	switch (rctx->screen->msaa_texture_support) {
-	case MSAA_TEXTURE_DECOMPRESSED:
-		blend_decompress = rctx->custom_blend_decompress;
-		break;
-	case MSAA_TEXTURE_COMPRESSED:
-		blend_decompress = rctx->custom_blend_fmask_decompress;
-		break;
-	case MSAA_TEXTURE_SAMPLE_ZERO:
-	default:
-		/* Nothing to do. */
-		rtex->dirty_level_mask = 0;
-		return;
-	}
-
 	for (level = first_level; level <= last_level; level++) {
 		if (!(rtex->dirty_level_mask & (1 << level)))
 			continue;
@@ -328,7 +313,7 @@ static void r600_blit_decompress_color(struct pipe_context *ctx,
 			cbsurf = ctx->create_surface(ctx, &rtex->resource.b.b, &surf_tmpl);
 
 			r600_blitter_begin(ctx, R600_DECOMPRESS);
-			util_blitter_custom_color(rctx->blitter, cbsurf, blend_decompress);
+			util_blitter_custom_color(rctx->blitter, cbsurf, rctx->custom_blend_decompress);
 			r600_blitter_end(ctx);
 
 			pipe_surface_reference(&cbsurf, NULL);
@@ -578,7 +563,6 @@ static void r600_resource_copy_region(struct pipe_context *ctx,
 	struct pipe_sampler_view src_templ, *src_view;
 	unsigned dst_width, dst_height, src_width0, src_height0, src_widthFL, src_heightFL;
 	struct pipe_box sbox, dstbox;
-	bool copy_all_samples;
 
 	/* Handle buffers first. */
 	if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
@@ -690,8 +674,6 @@ static void r600_resource_copy_region(struct pipe_context *ctx,
 							   src_widthFL, src_heightFL);
 	}
 
-	copy_all_samples = rctx->screen->msaa_texture_support != MSAA_TEXTURE_SAMPLE_ZERO;
-
         u_box_3d(dstx, dsty, dstz, abs(src_box->width), abs(src_box->height),
                  abs(src_box->depth), &dstbox);
 
@@ -700,7 +682,7 @@ static void r600_resource_copy_region(struct pipe_context *ctx,
 	util_blitter_blit_generic(rctx->blitter, dst_view, &dstbox,
 				  src_view, src_box, src_width0, src_height0,
 				  PIPE_MASK_RGBAZS, PIPE_TEX_FILTER_NEAREST, NULL,
-				  copy_all_samples);
+				  TRUE);
 	r600_blitter_end(ctx);
 
 	pipe_surface_reference(&dst_view, NULL);
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index efb4501..71f555b 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -333,9 +333,6 @@ static void r600_destroy_context(struct pipe_context *context)
 	if (rctx->custom_blend_decompress) {
 		rctx->context.delete_blend_state(&rctx->context, rctx->custom_blend_decompress);
 	}
-	if (rctx->custom_blend_fmask_decompress) {
-		rctx->context.delete_blend_state(&rctx->context, rctx->custom_blend_fmask_decompress);
-	}
 	util_unreference_framebuffer_state(&rctx->framebuffer.state);
 
 	if (rctx->blitter) {
@@ -430,7 +427,6 @@ static struct pipe_context *r600_create_context(struct pipe_screen *screen, void
 		rctx->custom_dsa_flush = evergreen_create_db_flush_dsa(rctx);
 		rctx->custom_blend_resolve = evergreen_create_resolve_blend(rctx);
 		rctx->custom_blend_decompress = evergreen_create_decompress_blend(rctx);
-		rctx->custom_blend_fmask_decompress = evergreen_create_fmask_decompress_blend(rctx);
 		rctx->has_vertex_cache = !(rctx->family == CHIP_CEDAR ||
 					   rctx->family == CHIP_PALM ||
 					   rctx->family == CHIP_SUMO ||
@@ -591,7 +587,9 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 	case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
+	case PIPE_CAP_TEXTURE_MULTISAMPLE:
 		return 1;
+
 	case PIPE_CAP_TGSI_TEXCOORD:
 		return 0;
 
@@ -610,9 +608,6 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_GLSL_FEATURE_LEVEL:
 		return 140;
 
-	case PIPE_CAP_TEXTURE_MULTISAMPLE:
-		return rscreen->msaa_texture_support != MSAA_TEXTURE_SAMPLE_ZERO;
-
 	/* Supported except the original R600. */
 	case PIPE_CAP_INDEP_BLEND_ENABLE:
 	case PIPE_CAP_INDEP_BLEND_FUNC:
@@ -1261,22 +1256,19 @@ struct pipe_screen *r600_screen_create(struct radeon_winsys *ws)
 	case R600:
 	case R700:
 		rscreen->has_msaa = rscreen->info.drm_minor >= 22;
-		rscreen->msaa_texture_support = MSAA_TEXTURE_DECOMPRESSED;
+		rscreen->has_compressed_msaa_texturing = false;
 		break;
 	case EVERGREEN:
 		rscreen->has_msaa = rscreen->info.drm_minor >= 19;
-		rscreen->msaa_texture_support =
-			rscreen->info.drm_minor >= 24 ? MSAA_TEXTURE_COMPRESSED :
-							MSAA_TEXTURE_DECOMPRESSED;
+		rscreen->has_compressed_msaa_texturing = rscreen->info.drm_minor >= 24;
 		break;
 	case CAYMAN:
 		rscreen->has_msaa = rscreen->info.drm_minor >= 19;
-		rscreen->msaa_texture_support = MSAA_TEXTURE_COMPRESSED;
+		rscreen->has_compressed_msaa_texturing = true;
 		break;
 	default:
 		rscreen->has_msaa = FALSE;
-		rscreen->msaa_texture_support = 0;
-		break;
+		rscreen->has_compressed_msaa_texturing = false;
 	}
 
 	rscreen->has_cp_dma = rscreen->info.drm_minor >= 27 &&
diff --git a/src/gallium/drivers/r600/r600_pipe.h b/src/gallium/drivers/r600/r600_pipe.h
index bb4e429..2a81434 100644
--- a/src/gallium/drivers/r600/r600_pipe.h
+++ b/src/gallium/drivers/r600/r600_pipe.h
@@ -216,22 +216,6 @@ struct r600_pipe_fences {
 	pipe_mutex			mutex;
 };
 
-enum r600_msaa_texture_mode {
-	/* If the hw can fetch the first sample only (no decompression available).
-	 * This means MSAA texturing is not fully implemented. */
-	MSAA_TEXTURE_SAMPLE_ZERO,
-
-	/* If the hw can fetch decompressed MSAA textures.
-	 * Supported families: R600, R700, Evergreen.
-	 * Cayman cannot use this, because it cannot do the decompression. */
-	MSAA_TEXTURE_DECOMPRESSED,
-
-	/* If the hw can fetch compressed MSAA textures, which means shaders can
-	 * read resolved FMASK. This yields the best performance.
-	 * Supported families: Evergreen, Cayman. */
-	MSAA_TEXTURE_COMPRESSED
-};
-
 typedef boolean (*r600g_dma_blit_t)(struct pipe_context *ctx,
 				struct pipe_resource *dst,
 				unsigned dst_level,
@@ -282,7 +266,7 @@ struct r600_screen {
 	bool				has_streamout;
 	bool				has_msaa;
 	bool				has_cp_dma;
-	enum r600_msaa_texture_mode	msaa_texture_support;
+	bool				has_compressed_msaa_texturing;
 	struct r600_tiling_info		tiling_info;
 	struct r600_pipe_fences		fences;
 
@@ -561,7 +545,6 @@ struct r600_context {
 	void				*custom_dsa_flush;
 	void				*custom_blend_resolve;
 	void				*custom_blend_decompress;
-	void				*custom_blend_fmask_decompress;
 	/* With rasterizer discard, there doesn't have to be a pixel shader.
 	 * In that case, we bind this one: */
 	void				*dummy_pixel_shader;
@@ -713,7 +696,6 @@ void evergreen_update_vs_state(struct pipe_context *ctx, struct r600_pipe_shader
 void *evergreen_create_db_flush_dsa(struct r600_context *rctx);
 void *evergreen_create_resolve_blend(struct r600_context *rctx);
 void *evergreen_create_decompress_blend(struct r600_context *rctx);
-void *evergreen_create_fmask_decompress_blend(struct r600_context *rctx);
 boolean evergreen_is_format_supported(struct pipe_screen *screen,
 				      enum pipe_format format,
 				      enum pipe_texture_target target,
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index 4416ef0..4e5af70 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -962,7 +962,7 @@ static int r600_shader_from_tgsi(struct r600_screen *rscreen,
 	ctx.native_integers = true;
 
 	r600_bytecode_init(ctx.bc, rscreen->chip_class, rscreen->family,
-			   rscreen->msaa_texture_support);
+			   rscreen->has_compressed_msaa_texturing);
 	ctx.tokens = tokens;
 	tgsi_scan_shader(tokens, &ctx.info);
 	shader->indirect_files = ctx.info.indirect_files;
@@ -3794,10 +3794,11 @@ static int tgsi_tex(struct r600_shader_ctx *ctx)
 	unsigned src_gpr;
 	int r, i, j;
 	int opcode;
-	bool read_compressed_msaa = ctx->bc->msaa_texture_mode == MSAA_TEXTURE_COMPRESSED &&
+	bool read_compressed_msaa = ctx->bc->has_compressed_msaa_texturing &&
 				    inst->Instruction.Opcode == TGSI_OPCODE_TXF &&
 				    (inst->Texture.Texture == TGSI_TEXTURE_2D_MSAA ||
 				     inst->Texture.Texture == TGSI_TEXTURE_2D_ARRAY_MSAA);
+
 	/* Texture fetch instructions can only use gprs as source.
 	 * Also they cannot negate the source or take the absolute value */
 	const boolean src_requires_loading = (inst->Instruction.Opcode != TGSI_OPCODE_TXQ_LZ &&