r600,radeonsi: GL_ARB_conditional_render_inverted

By using 'Tobias Klausmann' piglit test-suite patch. We obtain
a full 12/12 passes using this patch. By 'faking' to claim
support for this extension we obtain 7 fails and 5 passes.

Signed-off-by: Edward O'Callaghan <[email protected]>
Tested-by: Furkan Alaca <[email protected]>
Signed-off-by: Marek Olšák <[email protected]>

3 files changed, 15 insertions, 11 deletions

diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index e8459288106..e755784209a 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -268,6 +268,7 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_SAMPLE_SHADING:
 	case PIPE_CAP_CLIP_HALFZ:
 	case PIPE_CAP_POLYGON_OFFSET_CLAMP:
+	case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 		return 1;
 
 	case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
@@ -332,7 +333,6 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 	case PIPE_CAP_USER_VERTEX_BUFFERS:
 	case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
-	case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 	case PIPE_CAP_SAMPLER_VIEW_TARGET:
 	case PIPE_CAP_VERTEXID_NOBASE:
 	case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
diff --git a/src/gallium/drivers/radeon/r600_query.c b/src/gallium/drivers/radeon/r600_query.c
index a1d8241c513..6bf0271e14f 100644
--- a/src/gallium/drivers/radeon/r600_query.c
+++ b/src/gallium/drivers/radeon/r600_query.c
@@ -290,6 +290,13 @@ static void r600_emit_query_predication(struct r600_common_context *ctx, struct
 					int operation, bool flag_wait)
 {
 	struct radeon_winsys_cs *cs = ctx->rings.gfx.cs;
+	uint32_t op = PRED_OP(operation);
+
+	/* if true then invert, see GL_ARB_conditional_render_inverted */
+	if (ctx->current_render_cond_cond)
+		op |= PREDICATION_DRAW_NOT_VISIBLE; /* Draw if not visable/overflow */
+	else
+		op |= PREDICATION_DRAW_VISIBLE; /* Draw if visable/overflow */
 
 	if (operation == PREDICATION_OP_CLEAR) {
 		ctx->need_gfx_cs_space(&ctx->b, 3, FALSE);
@@ -300,24 +307,21 @@ static void r600_emit_query_predication(struct r600_common_context *ctx, struct
 	} else {
 		struct r600_query_buffer *qbuf;
 		unsigned count;
-		uint32_t op;
-
 		/* Find how many results there are. */
 		count = 0;
 		for (qbuf = &query->buffer; qbuf; qbuf = qbuf->previous) {
 			count += qbuf->results_end / query->result_size;
 		}
-
+	
 		ctx->need_gfx_cs_space(&ctx->b, 5 * count, TRUE);
-
-		op = PRED_OP(operation) | PREDICATION_DRAW_VISIBLE |
-				(flag_wait ? PREDICATION_HINT_WAIT : PREDICATION_HINT_NOWAIT_DRAW);
-
+	
+		op |= flag_wait ? PREDICATION_HINT_WAIT : PREDICATION_HINT_NOWAIT_DRAW;
+	
 		/* emit predicate packets for all data blocks */
 		for (qbuf = &query->buffer; qbuf; qbuf = qbuf->previous) {
 			unsigned results_base = 0;
 			uint64_t va = qbuf->buf->gpu_address;
-
+	
 			while (results_base < qbuf->results_end) {
 				radeon_emit(cs, PKT3(PKT3_SET_PREDICATION, 1, 0));
 				radeon_emit(cs, (va + results_base) & 0xFFFFFFFFUL);
@@ -325,7 +329,7 @@ static void r600_emit_query_predication(struct r600_common_context *ctx, struct
 				r600_emit_reloc(ctx, &ctx->rings.gfx, qbuf->buf, RADEON_USAGE_READ,
 						RADEON_PRIO_MIN);
 				results_base += query->result_size;
-
+	
 				/* set CONTINUE bit for all packets except the first */
 				op |= PREDICATION_CONTINUE;
 			}
diff --git a/src/gallium/drivers/radeonsi/si_pipe.c b/src/gallium/drivers/radeonsi/si_pipe.c
index ebe1f5a68f1..808b9bcdc84 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -250,6 +250,7 @@ static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 	case PIPE_CAP_TGSI_TEXCOORD:
 	case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
+	case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 		return 1;
 
 	case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
@@ -290,7 +291,6 @@ static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_USER_VERTEX_BUFFERS:
 	case PIPE_CAP_FAKE_SW_MSAA:
 	case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
-	case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 	case PIPE_CAP_SAMPLER_VIEW_TARGET:
 	case PIPE_CAP_VERTEXID_NOBASE:
 		return 0;