Mesa (radeon-rewrite): r300: when using cs path emit scissor in the cmdbuffer

[Jerome Glisse]

Module: Mesa
Branch: radeon-rewrite
Commit: 5dcbcbfca4f3c00de1fdab28d1cc8d691f67edce
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5dcbcbfca4f3c00de1fdab28d1cc8d691f67edce

Author: Jerome Glisse <jglisse at redhat.com>
Date:   Thu May 28 13:48:38 2009 +0200

r300: when using cs path emit scissor in the cmdbuffer

---

 src/mesa/drivers/dri/r300/r300_cmdbuf.c |   39 +++++++++++++++++++++++++++++++
 src/mesa/drivers/dri/r300/r300_cmdbuf.h |    1 +
 src/mesa/drivers/dri/r300/r300_render.c |    2 +
 src/mesa/drivers/dri/r300/r300_swtcl.c  |    1 +
 4 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/r300/r300_cmdbuf.c b/src/mesa/drivers/dri/r300/r300_cmdbuf.c
index e605076..b949c3b 100644
--- a/src/mesa/drivers/dri/r300/r300_cmdbuf.c
+++ b/src/mesa/drivers/dri/r300/r300_cmdbuf.c
@@ -209,6 +209,45 @@ static void emit_tex_offsets(GLcontext *ctx, struct radeon_state_atom * atom)
 	}
 }
 
+void r300_emit_scissor(GLcontext *ctx)
+{
+	r300ContextPtr r300 = R300_CONTEXT(ctx);
+	BATCH_LOCALS(&r300->radeon);
+    unsigned x1, y1, x2, y2;
+	struct radeon_renderbuffer *rrb;
+
+    if (!r300->radeon.radeonScreen->driScreen->dri2.enabled) {
+        return;
+    }
+	rrb = radeon_get_colorbuffer(&r300->radeon);
+	if (!rrb || !rrb->bo) {
+		fprintf(stderr, "no rrb\n");
+		return;
+	}
+    if (r300->radeon.state.scissor.enabled) {
+        x1 = r300->radeon.state.scissor.rect.x1;
+        y1 = r300->radeon.state.scissor.rect.y1;
+        x2 = r300->radeon.state.scissor.rect.x2 - 1;
+        y2 = r300->radeon.state.scissor.rect.y2 - 1;
+    } else {
+        x1 = 0;
+        y1 = 0;
+        x2 = rrb->width - 1;
+        y2 = rrb->height - 1;
+    }
+    if (r300->radeon.radeonScreen->chip_family < CHIP_FAMILY_RV515) {
+        x1 += R300_SCISSORS_OFFSET;
+        y1 += R300_SCISSORS_OFFSET;
+        x2 += R300_SCISSORS_OFFSET;
+        y2 += R300_SCISSORS_OFFSET;
+    }
+    BEGIN_BATCH_NO_AUTOSTATE(3);
+    OUT_BATCH_REGSEQ(R300_SC_SCISSORS_TL, 2);
+    OUT_BATCH((x1 << R300_SCISSORS_X_SHIFT)|(y1 << R300_SCISSORS_Y_SHIFT));
+    OUT_BATCH((x2 << R300_SCISSORS_X_SHIFT)|(y2 << R300_SCISSORS_Y_SHIFT));
+    END_BATCH();
+}
+
 static void emit_cb_offset(GLcontext *ctx, struct radeon_state_atom * atom)
 {
 	r300ContextPtr r300 = R300_CONTEXT(ctx);
diff --git a/src/mesa/drivers/dri/r300/r300_cmdbuf.h b/src/mesa/drivers/dri/r300/r300_cmdbuf.h
index 3786813..53bcc0e 100644
--- a/src/mesa/drivers/dri/r300/r300_cmdbuf.h
+++ b/src/mesa/drivers/dri/r300/r300_cmdbuf.h
@@ -39,6 +39,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "r300_context.h"
 
 extern void r300InitCmdBuf(r300ContextPtr r300);
+void r300_emit_scissor(GLcontext *ctx);
 
 void emit_vpu(GLcontext *ctx, struct radeon_state_atom * atom);
 int check_vpu(GLcontext *ctx, struct radeon_state_atom *atom);
diff --git a/src/mesa/drivers/dri/r300/r300_render.c b/src/mesa/drivers/dri/r300/r300_render.c
index 7edeaed..92310a0 100644
--- a/src/mesa/drivers/dri/r300/r300_render.c
+++ b/src/mesa/drivers/dri/r300/r300_render.c
@@ -189,6 +189,7 @@ static void r300FireEB(r300ContextPtr rmesa, int vertex_count, int type)
 {
 	BATCH_LOCALS(&rmesa->radeon);
 
+    r300_emit_scissor(rmesa->radeon.glCtx);
 	if (vertex_count > 0) {
 		BEGIN_BATCH(10);
 		OUT_BATCH_PACKET3(R300_PACKET3_3D_DRAW_INDX_2, 0);
@@ -329,6 +330,7 @@ static void r300FireAOS(r300ContextPtr rmesa, int vertex_count, int type)
 {
 	BATCH_LOCALS(&rmesa->radeon);
 
+    r300_emit_scissor(rmesa->radeon.glCtx);
 	BEGIN_BATCH(3);
 	OUT_BATCH_PACKET3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
 	OUT_BATCH(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (vertex_count << 16) | type);
diff --git a/src/mesa/drivers/dri/r300/r300_swtcl.c b/src/mesa/drivers/dri/r300/r300_swtcl.c
index 78fa031..68e24de 100644
--- a/src/mesa/drivers/dri/r300/r300_swtcl.c
+++ b/src/mesa/drivers/dri/r300/r300_swtcl.c
@@ -683,6 +683,7 @@ void r300_swtcl_flush(GLcontext *ctx, uint32_t current_offset)
 			   rmesa->radeon.hw.max_state_size + (12*sizeof(int)),
 			   __FUNCTION__);
 	radeonEmitState(&rmesa->radeon);
+    r300_emit_scissor(ctx);
 	r300EmitVertexAOS(rmesa,
 			rmesa->radeon.swtcl.vertex_size,
 			rmesa->radeon.dma.current,