r300g: remove redundant code and clean up

3 files changed, 57 insertions, 46 deletions

diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h
index 11cd9f855f3..23ea32c57ed 100644
--- a/src/gallium/drivers/r300/r300_context.h
+++ b/src/gallium/drivers/r300/r300_context.h
@@ -98,11 +98,14 @@ struct r300_sampler_state {
     unsigned min_lod, max_lod;
 };
 
+struct r300_scissor_regs {
+    uint32_t top_left;     /* R300_SC_SCISSORS_TL: 0x43e0 */
+    uint32_t bottom_right; /* R300_SC_SCISSORS_BR: 0x43e4 */
+};
+
 struct r300_scissor_state {
-    uint32_t scissor_top_left;     /* R300_SC_SCISSORS_TL: 0x43e0 */
-    uint32_t scissor_bottom_right; /* R300_SC_SCISSORS_BR: 0x43e4 */
-    uint32_t no_scissor_top_left;     /* R300_SC_SCISSORS_TL: 0x43e0 */
-    uint32_t no_scissor_bottom_right; /* R300_SC_SCISSORS_BR: 0x43e4 */
+    struct r300_scissor_regs framebuffer;
+    struct r300_scissor_regs scissor;
 };
 
 struct r300_texture_state {
diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c
index 04dca292167..dbf316a9b57 100644
--- a/src/gallium/drivers/r300/r300_emit.c
+++ b/src/gallium/drivers/r300/r300_emit.c
@@ -563,21 +563,26 @@ void r300_emit_rs_block_state(struct r300_context* r300,
     END_CS;
 }
 
-void r300_emit_scissor_state(struct r300_context* r300,
-                             struct r300_scissor_state* scissor)
+static void r300_emit_scissor_regs(struct r300_context* r300,
+                                   struct r300_scissor_regs* scissor)
 {
     CS_LOCALS(r300);
 
     BEGIN_CS(3);
     OUT_CS_REG_SEQ(R300_SC_SCISSORS_TL, 2);
+    OUT_CS(scissor->top_left);
+    OUT_CS(scissor->bottom_right);
+    END_CS;
+}
+
+void r300_emit_scissor_state(struct r300_context* r300,
+                             struct r300_scissor_state* scissor)
+{
     if (r300->rs_state->rs.scissor) {
-       OUT_CS(scissor->scissor_top_left);
-       OUT_CS(scissor->scissor_bottom_right);
+        r300_emit_scissor_regs(r300, &scissor->scissor);
     } else {
-       OUT_CS(scissor->no_scissor_top_left);
-       OUT_CS(scissor->no_scissor_bottom_right);
+        r300_emit_scissor_regs(r300, &scissor->framebuffer);
     }
-    END_CS;
 }
 
 void r300_emit_texture(struct r300_context* r300,
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c
index 2bc2b79c021..d3233557cea 100644
--- a/src/gallium/drivers/r300/r300_state.c
+++ b/src/gallium/drivers/r300/r300_state.c
@@ -289,11 +289,34 @@ static void r300_set_edgeflags(struct pipe_context* pipe,
     /* XXX and even worse, I have no idea WTF the bitfield is */
 }
 
+static void r300_set_scissor_regs(const struct pipe_scissor_state* state,
+                                  struct r300_scissor_regs *scissor,
+                                  boolean is_r500)
+{
+    if (is_r500) {
+        scissor->top_left =
+            (state->minx << R300_SCISSORS_X_SHIFT) |
+            (state->miny << R300_SCISSORS_Y_SHIFT);
+        scissor->bottom_right =
+            ((state->maxx - 1) << R300_SCISSORS_X_SHIFT) |
+            ((state->maxy - 1) << R300_SCISSORS_Y_SHIFT);
+    } else {
+        /* Offset of 1440 in non-R500 chipsets. */
+        scissor->top_left =
+            ((state->minx + 1440) << R300_SCISSORS_X_SHIFT) |
+            ((state->miny + 1440) << R300_SCISSORS_Y_SHIFT);
+        scissor->bottom_right =
+            (((state->maxx - 1) + 1440) << R300_SCISSORS_X_SHIFT) |
+            (((state->maxy - 1) + 1440) << R300_SCISSORS_Y_SHIFT);
+    }
+}
+
 static void
     r300_set_framebuffer_state(struct pipe_context* pipe,
                                const struct pipe_framebuffer_state* state)
 {
     struct r300_context* r300 = r300_context(pipe);
+    struct pipe_scissor_state scissor;
 
     if (r300->draw) {
         draw_flush(r300->draw);
@@ -301,26 +324,17 @@ static void
 
     r300->framebuffer_state = *state;
 
-    r300->dirty_state |= R300_NEW_FRAMEBUFFERS;
+    scissor.minx = scissor.miny = 0;
+    scissor.maxx = state->width;
+    scissor.maxy = state->height;
+    r300_set_scissor_regs(&scissor, &r300->scissor_state->framebuffer,
+                          r300_screen(r300->context.screen)->caps->is_r500);
 
-    if (r300_screen(r300->context.screen)->caps->is_r500) {
-        r300->scissor_state->no_scissor_top_left =
-            (0 << R300_SCISSORS_X_SHIFT) |
-            (0 << R300_SCISSORS_Y_SHIFT);
-        r300->scissor_state->no_scissor_bottom_right =
-            ((state->width - 1) << R300_SCISSORS_X_SHIFT) |
-            ((state->height - 1) << R300_SCISSORS_Y_SHIFT);
-    } else {
-        /* Offset of 1440 in non-R500 chipsets. */
-        r300->scissor_state->no_scissor_top_left =
-            ((0 + 1440) << R300_SCISSORS_X_SHIFT) |
-            ((0 + 1440) << R300_SCISSORS_Y_SHIFT);
-        r300->scissor_state->no_scissor_bottom_right =
-            (((state->width - 1) + 1440) << R300_SCISSORS_X_SHIFT) |
-            (((state->height - 1) + 1440) << R300_SCISSORS_Y_SHIFT);
+    /* Don't rely on the order of states being set for the first time. */
+    if (!r300->rs_state || !r300->rs_state->rs.scissor) {
+        r300->dirty_state |= R300_NEW_SCISSOR;
     }
-
-    r300->dirty_state |= R300_NEW_SCISSOR;
+    r300->dirty_state |= R300_NEW_FRAMEBUFFERS;
 }
 
 /* Create fragment shader state. */
@@ -642,24 +656,13 @@ static void r300_set_scissor_state(struct pipe_context* pipe,
 {
     struct r300_context* r300 = r300_context(pipe);
 
-    if (r300_screen(r300->context.screen)->caps->is_r500) {
-        r300->scissor_state->scissor_top_left =
-            (state->minx << R300_SCISSORS_X_SHIFT) |
-            (state->miny << R300_SCISSORS_Y_SHIFT);
-        r300->scissor_state->scissor_bottom_right =
-            ((state->maxx - 1) << R300_SCISSORS_X_SHIFT) |
-            ((state->maxy - 1) << R300_SCISSORS_Y_SHIFT);
-    } else {
-        /* Offset of 1440 in non-R500 chipsets. */
-        r300->scissor_state->scissor_top_left =
-            ((state->minx + 1440) << R300_SCISSORS_X_SHIFT) |
-            ((state->miny + 1440) << R300_SCISSORS_Y_SHIFT);
-        r300->scissor_state->scissor_bottom_right =
-            (((state->maxx - 1) + 1440) << R300_SCISSORS_X_SHIFT) |
-            (((state->maxy - 1) + 1440) << R300_SCISSORS_Y_SHIFT);
-    }
+    r300_set_scissor_regs(state, &r300->scissor_state->scissor,
+                          r300_screen(r300->context.screen)->caps->is_r500);
 
-    r300->dirty_state |= R300_NEW_SCISSOR;
+    /* Don't rely on the order of states being set for the first time. */
+    if (!r300->rs_state || r300->rs_state->rs.scissor) {
+        r300->dirty_state |= R300_NEW_SCISSOR;
+    }
 }
 
 static void r300_set_viewport_state(struct pipe_context* pipe,