Merge remote branch 'origin/master' into lp-binning

Conflicts:
	src/gallium/auxiliary/util/u_surface.c
	src/gallium/drivers/llvmpipe/Makefile
	src/gallium/drivers/llvmpipe/SConscript
	src/gallium/drivers/llvmpipe/lp_bld_arit.c
	src/gallium/drivers/llvmpipe/lp_bld_flow.c
	src/gallium/drivers/llvmpipe/lp_bld_interp.c
	src/gallium/drivers/llvmpipe/lp_clear.c
	src/gallium/drivers/llvmpipe/lp_context.c
	src/gallium/drivers/llvmpipe/lp_context.h
	src/gallium/drivers/llvmpipe/lp_draw_arrays.c
	src/gallium/drivers/llvmpipe/lp_jit.c
	src/gallium/drivers/llvmpipe/lp_jit.h
	src/gallium/drivers/llvmpipe/lp_prim_vbuf.c
	src/gallium/drivers/llvmpipe/lp_setup.c
	src/gallium/drivers/llvmpipe/lp_setup_point.c
	src/gallium/drivers/llvmpipe/lp_state.h
	src/gallium/drivers/llvmpipe/lp_state_blend.c
	src/gallium/drivers/llvmpipe/lp_state_derived.c
	src/gallium/drivers/llvmpipe/lp_state_fs.c
	src/gallium/drivers/llvmpipe/lp_state_sampler.c
	src/gallium/drivers/llvmpipe/lp_state_surface.c
	src/gallium/drivers/llvmpipe/lp_tex_cache.c
	src/gallium/drivers/llvmpipe/lp_tex_cache.h
	src/gallium/drivers/llvmpipe/lp_tex_sample.h
	src/gallium/drivers/llvmpipe/lp_tile_cache.c

1 files changed, 470 insertions, 122 deletions

diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c
index 88cb9af6fb7..a145a7f18a5 100644
--- a/src/gallium/drivers/r300/r300_state.c
+++ b/src/gallium/drivers/r300/r300_state.c
@@ -1,5 +1,6 @@
 /*
  * Copyright 2008 Corbin Simpson <[email protected]>
+ * Copyright 2009 Marek Olšák <[email protected]>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -20,8 +21,10 @@
  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
 
-#include "util/u_debug.h"
+#include "draw/draw_context.h"
+
 #include "util/u_math.h"
+#include "util/u_memory.h"
 #include "util/u_pack_color.h"
 
 #include "tgsi/tgsi_parse.h"
@@ -31,6 +34,7 @@
 
 #include "r300_context.h"
 #include "r300_reg.h"
+#include "r300_screen.h"
 #include "r300_state_inlines.h"
 #include "r300_fs.h"
 #include "r300_vs.h"
@@ -38,6 +42,120 @@
 /* r300_state: Functions used to intialize state context by translating
  * Gallium state objects into semi-native r300 state objects. */
 
+static boolean blend_discard_if_src_alpha_0(unsigned srcRGB, unsigned srcA,
+                                            unsigned dstRGB, unsigned dstA)
+{
+    /* If the blend equation is ADD or REVERSE_SUBTRACT,
+     * SRC_ALPHA == 0, and the following state is set, the colorbuffer
+     * will not be changed.
+     * Notice that the dst factors are the src factors inverted. */
+    return (srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
+            srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
+            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
+           (srcA == PIPE_BLENDFACTOR_SRC_COLOR ||
+            srcA == PIPE_BLENDFACTOR_SRC_ALPHA ||
+            srcA == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
+            srcA == PIPE_BLENDFACTOR_ZERO) &&
+           (dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
+            dstRGB == PIPE_BLENDFACTOR_ONE) &&
+           (dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
+            dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
+            dstA == PIPE_BLENDFACTOR_ONE);
+}
+
+static boolean blend_discard_if_src_alpha_1(unsigned srcRGB, unsigned srcA,
+                                            unsigned dstRGB, unsigned dstA)
+{
+    /* If the blend equation is ADD or REVERSE_SUBTRACT,
+     * SRC_ALPHA == 1, and the following state is set, the colorbuffer
+     * will not be changed.
+     * Notice that the dst factors are the src factors inverted. */
+    return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
+            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
+           (srcA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
+            srcA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
+            srcA == PIPE_BLENDFACTOR_ZERO) &&
+           (dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
+            dstRGB == PIPE_BLENDFACTOR_ONE) &&
+           (dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
+            dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
+            dstA == PIPE_BLENDFACTOR_ONE);
+}
+
+static boolean blend_discard_if_src_color_0(unsigned srcRGB, unsigned srcA,
+                                            unsigned dstRGB, unsigned dstA)
+{
+    /* If the blend equation is ADD or REVERSE_SUBTRACT,
+     * SRC_COLOR == (0,0,0), and the following state is set, the colorbuffer
+     * will not be changed.
+     * Notice that the dst factors are the src factors inverted. */
+    return (srcRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
+            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
+           (srcA == PIPE_BLENDFACTOR_ZERO) &&
+           (dstRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
+            dstRGB == PIPE_BLENDFACTOR_ONE) &&
+           (dstA == PIPE_BLENDFACTOR_ONE);
+}
+
+static boolean blend_discard_if_src_color_1(unsigned srcRGB, unsigned srcA,
+                                            unsigned dstRGB, unsigned dstA)
+{
+    /* If the blend equation is ADD or REVERSE_SUBTRACT,
+     * SRC_COLOR == (1,1,1), and the following state is set, the colorbuffer
+     * will not be changed.
+     * Notice that the dst factors are the src factors inverted. */
+    return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
+            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
+           (srcA == PIPE_BLENDFACTOR_ZERO) &&
+           (dstRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
+            dstRGB == PIPE_BLENDFACTOR_ONE) &&
+           (dstA == PIPE_BLENDFACTOR_ONE);
+}
+
+static boolean blend_discard_if_src_alpha_color_0(unsigned srcRGB, unsigned srcA,
+                                                  unsigned dstRGB, unsigned dstA)
+{
+    /* If the blend equation is ADD or REVERSE_SUBTRACT,
+     * SRC_ALPHA_COLOR == (0,0,0,0), and the following state is set,
+     * the colorbuffer will not be changed.
+     * Notice that the dst factors are the src factors inverted. */
+    return (srcRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
+            srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
+            srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
+            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
+           (srcA == PIPE_BLENDFACTOR_SRC_COLOR ||
+            srcA == PIPE_BLENDFACTOR_SRC_ALPHA ||
+            srcA == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
+            srcA == PIPE_BLENDFACTOR_ZERO) &&
+           (dstRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
+            dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
+            dstRGB == PIPE_BLENDFACTOR_ONE) &&
+           (dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
+            dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
+            dstA == PIPE_BLENDFACTOR_ONE);
+}
+
+static boolean blend_discard_if_src_alpha_color_1(unsigned srcRGB, unsigned srcA,
+                                                  unsigned dstRGB, unsigned dstA)
+{
+    /* If the blend equation is ADD or REVERSE_SUBTRACT,
+     * SRC_ALPHA_COLOR == (1,1,1,1), and the following state is set,
+     * the colorbuffer will not be changed.
+     * Notice that the dst factors are the src factors inverted. */
+    return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
+            srcRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
+            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
+           (srcA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
+            srcA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
+            srcA == PIPE_BLENDFACTOR_ZERO) &&
+           (dstRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
+            dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
+            dstRGB == PIPE_BLENDFACTOR_ONE) &&
+           (dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
+            dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
+            dstA == PIPE_BLENDFACTOR_ONE);
+}
+
 /* Create a new blend state based on the CSO blend state.
  *
  * This encompasses alpha blending, logic/raster ops, and blend dithering. */
@@ -46,23 +164,123 @@ static void* r300_create_blend_state(struct pipe_context* pipe,
 {
     struct r300_blend_state* blend = CALLOC_STRUCT(r300_blend_state);
 
-    if (state->blend_enable) {
-        /* XXX for now, always do separate alpha...
-         * is it faster to do it with one reg? */
+    if (state->blend_enable)
+    {
+        unsigned eqRGB = state->rgb_func;
+        unsigned srcRGB = state->rgb_src_factor;
+        unsigned dstRGB = state->rgb_dst_factor;
+
+        unsigned eqA = state->alpha_func;
+        unsigned srcA = state->alpha_src_factor;
+        unsigned dstA = state->alpha_dst_factor;
+
+        /* despite the name, ALPHA_BLEND_ENABLE has nothing to do with alpha,
+         * this is just the crappy D3D naming */
         blend->blend_control = R300_ALPHA_BLEND_ENABLE |
-                R300_SEPARATE_ALPHA_ENABLE |
-                R300_READ_ENABLE |
-                r300_translate_blend_function(state->rgb_func) |
-                (r300_translate_blend_factor(state->rgb_src_factor) <<
-                    R300_SRC_BLEND_SHIFT) |
-                (r300_translate_blend_factor(state->rgb_dst_factor) <<
-                    R300_DST_BLEND_SHIFT);
-        blend->alpha_blend_control =
-                r300_translate_blend_function(state->alpha_func) |
-                (r300_translate_blend_factor(state->alpha_src_factor) <<
-                    R300_SRC_BLEND_SHIFT) |
-                (r300_translate_blend_factor(state->alpha_dst_factor) <<
-                    R300_DST_BLEND_SHIFT);
+            r300_translate_blend_function(eqRGB) |
+            ( r300_translate_blend_factor(srcRGB) << R300_SRC_BLEND_SHIFT) |
+            ( r300_translate_blend_factor(dstRGB) << R300_DST_BLEND_SHIFT);
+
+        /* Optimization: some operations do not require the destination color.
+         *
+         * When SRC_ALPHA_SATURATE is used, colorbuffer reads must be enabled,
+         * otherwise blending gives incorrect results. It seems to be
+         * a hardware bug. */
+        if (eqRGB == PIPE_BLEND_MIN || eqA == PIPE_BLEND_MIN ||
+            eqRGB == PIPE_BLEND_MAX || eqA == PIPE_BLEND_MAX ||
+            dstRGB != PIPE_BLENDFACTOR_ZERO ||
+            dstA != PIPE_BLENDFACTOR_ZERO ||
+            srcRGB == PIPE_BLENDFACTOR_DST_COLOR ||
+            srcRGB == PIPE_BLENDFACTOR_DST_ALPHA ||
+            srcRGB == PIPE_BLENDFACTOR_INV_DST_COLOR ||
+            srcRGB == PIPE_BLENDFACTOR_INV_DST_ALPHA ||
+            srcA == PIPE_BLENDFACTOR_DST_COLOR ||
+            srcA == PIPE_BLENDFACTOR_DST_ALPHA ||
+            srcA == PIPE_BLENDFACTOR_INV_DST_COLOR ||
+            srcA == PIPE_BLENDFACTOR_INV_DST_ALPHA ||
+            srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE) {
+            /* Enable reading from the colorbuffer. */
+            blend->blend_control |= R300_READ_ENABLE;
+
+            if (r300_screen(r300_context(pipe)->context.screen)->caps->is_r500) {
+                /* Optimization: Depending on incoming pixels, we can
+                 * conditionally disable the reading in hardware... */
+                if (eqRGB != PIPE_BLEND_MIN && eqA != PIPE_BLEND_MIN &&
+                    eqRGB != PIPE_BLEND_MAX && eqA != PIPE_BLEND_MAX) {
+                    /* Disable reading if SRC_ALPHA == 0. */
+                    if ((dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
+                         dstRGB == PIPE_BLENDFACTOR_ZERO) &&
+                        (dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
+                         dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
+                         dstA == PIPE_BLENDFACTOR_ZERO)) {
+                         blend->blend_control |= R500_SRC_ALPHA_0_NO_READ;
+                    }
+
+                    /* Disable reading if SRC_ALPHA == 1. */
+                    if ((dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
+                         dstRGB == PIPE_BLENDFACTOR_ZERO) &&
+                        (dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
+                         dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
+                         dstA == PIPE_BLENDFACTOR_ZERO)) {
+                         blend->blend_control |= R500_SRC_ALPHA_1_NO_READ;
+                    }
+                }
+            }
+        }
+
+        /* Optimization: discard pixels which don't change the colorbuffer.
+         *
+         * The code below is non-trivial and some math is involved.
+         *
+         * Discarding pixels must be disabled when FP16 AA is enabled.
+         * This is a hardware bug. Also, this implementation wouldn't work
+         * with FP blending enabled and equation clamping disabled.
+         *
+         * Equations other than ADD are rarely used and therefore won't be
+         * optimized. */
+        if ((eqRGB == PIPE_BLEND_ADD || eqRGB == PIPE_BLEND_REVERSE_SUBTRACT) &&
+            (eqA == PIPE_BLEND_ADD || eqA == PIPE_BLEND_REVERSE_SUBTRACT)) {
+            /* ADD: X+Y
+             * REVERSE_SUBTRACT: Y-X
+             *
+             * The idea is:
+             * If X = src*srcFactor = 0 and Y = dst*dstFactor = 1,
+             * then CB will not be changed.
+             *
+             * Given the srcFactor and dstFactor variables, we can derive
+             * what src and dst should be equal to and discard appropriate
+             * pixels.
+             */
+            if (blend_discard_if_src_alpha_0(srcRGB, srcA, dstRGB, dstA)) {
+                blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_ALPHA_0;
+            } else if (blend_discard_if_src_alpha_1(srcRGB, srcA,
+                                                    dstRGB, dstA)) {
+                blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_ALPHA_1;
+            } else if (blend_discard_if_src_color_0(srcRGB, srcA,
+                                                    dstRGB, dstA)) {
+                blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_COLOR_0;
+            } else if (blend_discard_if_src_color_1(srcRGB, srcA,
+                                                    dstRGB, dstA)) {
+                blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_COLOR_1;
+            } else if (blend_discard_if_src_alpha_color_0(srcRGB, srcA,
+                                                          dstRGB, dstA)) {
+                blend->blend_control |=
+                    R300_DISCARD_SRC_PIXELS_SRC_ALPHA_COLOR_0;
+            } else if (blend_discard_if_src_alpha_color_1(srcRGB, srcA,
+                                                          dstRGB, dstA)) {
+                blend->blend_control |=
+                    R300_DISCARD_SRC_PIXELS_SRC_ALPHA_COLOR_1;
+            }
+        }
+
+        /* separate alpha */
+        if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) {
+            blend->blend_control |= R300_SEPARATE_ALPHA_ENABLE;
+            blend->alpha_blend_control =
+                r300_translate_blend_function(eqA) |
+                (r300_translate_blend_factor(srcA) << R300_SRC_BLEND_SHIFT) |
+                (r300_translate_blend_factor(dstA) << R300_DST_BLEND_SHIFT);
+        }
     }
 
     /* PIPE_LOGICOP_* don't need to be translated, fortunately. */
@@ -71,6 +289,20 @@ static void* r300_create_blend_state(struct pipe_context* pipe,
                 (state->logicop_func) << R300_RB3D_ROPCNTL_ROP_SHIFT;
     }
 
+    /* Color Channel Mask */
+    if (state->colormask & PIPE_MASK_R) {
+        blend->color_channel_mask |= RB3D_COLOR_CHANNEL_MASK_RED_MASK0;
+    }
+    if (state->colormask & PIPE_MASK_G) {
+        blend->color_channel_mask |= RB3D_COLOR_CHANNEL_MASK_GREEN_MASK0;
+    }
+    if (state->colormask & PIPE_MASK_B) {
+        blend->color_channel_mask |= RB3D_COLOR_CHANNEL_MASK_BLUE_MASK0;
+    }
+    if (state->colormask & PIPE_MASK_A) {
+        blend->color_channel_mask |= RB3D_COLOR_CHANNEL_MASK_ALPHA_MASK0;
+    }
+
     if (state->dither) {
         blend->dither = R300_RB3D_DITHER_CTL_DITHER_MODE_LUT |
                 R300_RB3D_DITHER_CTL_ALPHA_DITHER_MODE_LUT;
@@ -96,25 +328,30 @@ static void r300_delete_blend_state(struct pipe_context* pipe,
     FREE(state);
 }
 
+/* Convert float to 10bit integer */
+static unsigned float_to_fixed10(float f)
+{
+    return CLAMP((unsigned)(f * 1023.9f), 0, 1023);
+}
+
 /* Set blend color.
  * Setup both R300 and R500 registers, figure out later which one to write. */
 static void r300_set_blend_color(struct pipe_context* pipe,
                                  const struct pipe_blend_color* color)
 {
     struct r300_context* r300 = r300_context(pipe);
-    ubyte ur, ug, ub, ua;
-
-    ur = float_to_ubyte(color->color[0]);
-    ug = float_to_ubyte(color->color[1]);
-    ub = float_to_ubyte(color->color[2]);
-    ua = float_to_ubyte(color->color[3]);
+    union util_color uc;
 
-    util_pack_color(color->color, PIPE_FORMAT_A8R8G8B8_UNORM,
-            &r300->blend_color_state->blend_color);
+    util_pack_color(color->color, PIPE_FORMAT_A8R8G8B8_UNORM, &uc);
+    r300->blend_color_state->blend_color = uc.ui;
 
-    /* XXX this is wrong */
-    r300->blend_color_state->blend_color_red_alpha = ur | (ua << 16);
-    r300->blend_color_state->blend_color_green_blue = ub | (ug << 16);
+    /* XXX if FP16 blending is enabled, we should use the FP16 format */
+    r300->blend_color_state->blend_color_red_alpha =
+        float_to_fixed10(color->color[0]) |
+        (float_to_fixed10(color->color[3]) << 16);
+    r300->blend_color_state->blend_color_green_blue =
+        float_to_fixed10(color->color[2]) |
+        (float_to_fixed10(color->color[1]) << 16);
 
     r300->dirty_state |= R300_NEW_BLEND_COLOR;
 }
@@ -133,31 +370,6 @@ static void r300_set_clip_state(struct pipe_context* pipe,
     }
 }
 
-static void
-    r300_set_constant_buffer(struct pipe_context* pipe,
-                             uint shader, uint index,
-                             const struct pipe_constant_buffer* buffer)
-{
-    struct r300_context* r300 = r300_context(pipe);
-
-    /* This entire chunk of code seems ever-so-slightly baked.
-     * It's as if I've got pipe_buffer* matryoshkas... */
-    if (buffer && buffer->buffer && buffer->buffer->size) {
-        void* map = pipe->winsys->buffer_map(pipe->winsys, buffer->buffer,
-                                             PIPE_BUFFER_USAGE_CPU_READ);
-        memcpy(r300->shader_constants[shader].constants,
-            map, buffer->buffer->size);
-        pipe->winsys->buffer_unmap(pipe->winsys, buffer->buffer);
-
-        r300->shader_constants[shader].count =
-            buffer->buffer->size / (sizeof(float) * 4);
-    } else {
-        r300->shader_constants[shader].count = 0;
-    }
-
-    r300->dirty_state |= R300_NEW_CONSTANTS;
-}
-
 /* Create a new depth, stencil, and alpha state based on the CSO dsa state.
  *
  * This contains the depth buffer, stencil buffer, alpha test, and such.
@@ -167,6 +379,8 @@ static void*
         r300_create_dsa_state(struct pipe_context* pipe,
                               const struct pipe_depth_stencil_alpha_state* state)
 {
+    struct r300_capabilities *caps =
+        r300_screen(r300_context(pipe)->context.screen)->caps;
     struct r300_dsa_state* dsa = CALLOC_STRUCT(r300_dsa_state);
 
     /* Depth test setup. */
@@ -211,9 +425,16 @@ static void*
             (r300_translate_stencil_op(state->stencil[1].zfail_op) <<
                 R300_S_BACK_ZFAIL_OP_SHIFT);
 
-            dsa->stencil_ref_bf = (state->stencil[1].ref_value) |
-                (state->stencil[1].valuemask << R300_STENCILMASK_SHIFT) |
-                (state->stencil[1].writemask << R300_STENCILWRITEMASK_SHIFT);
+            /* XXX it seems r3xx doesn't support STENCILREFMASK_BF */
+            if (caps->is_r500)
+            {
+                dsa->z_buffer_control |= R500_STENCIL_REFMASK_FRONT_BACK;
+                dsa->stencil_ref_bf = (state->stencil[1].ref_value) |
+                    (state->stencil[1].valuemask <<
+                    R300_STENCILMASK_SHIFT) |
+                    (state->stencil[1].writemask <<
+                    R300_STENCILWRITEMASK_SHIFT);
+            }
         }
     }
 
@@ -222,11 +443,13 @@ static void*
         dsa->alpha_function =
             r300_translate_alpha_function(state->alpha.func) |
             R300_FG_ALPHA_FUNC_ENABLE;
-        dsa->alpha_reference = CLAMP(state->alpha.ref_value * 1023.0f,
-                                     0, 1023);
-    } else {
-        /* XXX need to fix this to be dynamically set
-        dsa->z_buffer_top = R300_ZTOP_ENABLE; */
+
+        /* XXX figure out why emitting 10bit alpha ref causes CS to dump */
+        /* always use 8bit alpha ref */
+        dsa->alpha_function |= float_to_ubyte(state->alpha.ref_value);
+
+        if (caps->is_r500)
+            dsa->alpha_function |= R500_FG_ALPHA_FUNC_8BIT;
     }
 
     return (void*)dsa;
@@ -249,11 +472,29 @@ static void r300_delete_dsa_state(struct pipe_context* pipe,
     FREE(state);
 }
 
-static void r300_set_edgeflags(struct pipe_context* pipe,
-                               const unsigned* bitfield)
+static void r300_set_scissor_regs(const struct pipe_scissor_state* state,
+                                  struct r300_scissor_regs *scissor,
+                                  boolean is_r500)
 {
-    /* XXX you know it's bad when i915 has this blank too */
-    /* XXX and even worse, I have no idea WTF the bitfield is */
+    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);
+    }
+
+    scissor->empty_area = state->minx >= state->maxx ||
+                          state->miny >= state->maxy;
 }
 
 static void
@@ -261,12 +502,27 @@ static void
                                const struct pipe_framebuffer_state* state)
 {
     struct r300_context* r300 = r300_context(pipe);
+    struct pipe_scissor_state scissor;
 
-    draw_flush(r300->draw);
+    if (r300->draw) {
+        draw_flush(r300->draw);
+    }
 
     r300->framebuffer_state = *state;
 
+    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);
+
+    /* 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_FRAMEBUFFERS;
+    r300->dirty_state |= R300_NEW_BLEND;
+    r300->dirty_state |= R300_NEW_DSA;
 }
 
 /* Create fragment shader state. */
@@ -282,6 +538,7 @@ static void* r300_create_fs_state(struct pipe_context* pipe,
     fs->state.tokens = tgsi_dup_tokens(shader->tokens);
 
     tgsi_scan_shader(shader->tokens, &fs->info);
+    r300_shader_read_fs_inputs(&fs->info, &fs->inputs);
 
     return (void*)fs;
 }
@@ -295,21 +552,31 @@ static void r300_bind_fs_state(struct pipe_context* pipe, void* shader)
     if (fs == NULL) {
         r300->fs = NULL;
         return;
-    } else if (!fs->translated) {
-        r300_translate_fragment_shader(r300, fs);
     }
 
     r300->fs = fs;
+    r300_pick_fragment_shader(r300);
 
-    r300->dirty_state |= R300_NEW_FRAGMENT_SHADER;
+    if (r300->vs && r300_vertex_shader_setup_wpos(r300)) {
+        r300->dirty_state |= R300_NEW_VERTEX_FORMAT;
+    }
+
+    r300->dirty_state |= R300_NEW_FRAGMENT_SHADER | R300_NEW_FRAGMENT_SHADER_CONSTANTS;
 }
 
 /* Delete fragment shader state. */
 static void r300_delete_fs_state(struct pipe_context* pipe, void* shader)
 {
     struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
-    rc_constants_destroy(&fs->code.constants);
-    FREE(fs->state.tokens);
+    struct r300_fragment_shader_code *tmp, *ptr = fs->first;
+
+    while (ptr) {
+        tmp = ptr;
+        ptr = ptr->next;
+        rc_constants_destroy(&tmp->code.constants);
+        FREE(tmp);
+    }
+    FREE((void*)fs->state.tokens);
     FREE(shader);
 }
 
@@ -347,8 +614,6 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
     if (state->bypass_vs_clip_and_viewport ||
             !r300_screen(pipe->screen)->caps->has_tcl) {
         rs->vap_control_status |= R300_VAP_TCL_BYPASS;
-    } else {
-        rs->rs.bypass_vs_clip_and_viewport = TRUE;
     }
 
     rs->point_size = pack_float_16_6x(state->point_size) |
@@ -363,25 +628,52 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
     rs->line_control = pack_float_16_6x(state->line_width) |
         R300_GA_LINE_CNTL_END_TYPE_COMP;
 
+    /* XXX I think there is something wrong with the polygon mode,
+     * XXX re-test when r300g is in a better shape */
+
+    /* Enable polygon mode */
+    if (state->fill_cw != PIPE_POLYGON_MODE_FILL ||
+        state->fill_ccw != PIPE_POLYGON_MODE_FILL) {
+        rs->polygon_mode = R300_GA_POLY_MODE_DUAL;
+    }
+
     /* Radeons don't think in "CW/CCW", they think in "front/back". */
     if (state->front_winding == PIPE_WINDING_CW) {
         rs->cull_mode = R300_FRONT_FACE_CW;
 
+        /* Polygon offset */
         if (state->offset_cw) {
             rs->polygon_offset_enable |= R300_FRONT_ENABLE;
         }
         if (state->offset_ccw) {
             rs->polygon_offset_enable |= R300_BACK_ENABLE;
         }
+
+        /* Polygon mode */
+        if (rs->polygon_mode) {
+            rs->polygon_mode |=
+                r300_translate_polygon_mode_front(state->fill_cw);
+            rs->polygon_mode |=
+                r300_translate_polygon_mode_back(state->fill_ccw);
+        }
     } else {
         rs->cull_mode = R300_FRONT_FACE_CCW;
 
+        /* Polygon offset */
         if (state->offset_ccw) {
             rs->polygon_offset_enable |= R300_FRONT_ENABLE;
         }
         if (state->offset_cw) {
             rs->polygon_offset_enable |= R300_BACK_ENABLE;
         }
+
+        /* Polygon mode */
+        if (rs->polygon_mode) {
+            rs->polygon_mode |=
+                r300_translate_polygon_mode_front(state->fill_ccw);
+            rs->polygon_mode |=
+                r300_translate_polygon_mode_back(state->fill_cw);
+        }
     }
     if (state->front_winding & state->cull_mode) {
         rs->cull_mode |= R300_CULL_FRONT;
@@ -412,10 +704,6 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
         rs->color_control = R300_SHADE_MODEL_SMOOTH;
     }
 
-    if (!state->flatshade_first) {
-        rs->color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST;
-    }
-
     return (void*)rs;
 }
 
@@ -425,14 +713,20 @@ static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
     struct r300_context* r300 = r300_context(pipe);
     struct r300_rs_state* rs = (struct r300_rs_state*)state;
 
-    draw_flush(r300->draw);
-    draw_set_rasterizer_state(r300->draw, &rs->rs);
+    if (r300->draw) {
+        draw_flush(r300->draw);
+        draw_set_rasterizer_state(r300->draw, &rs->rs);
+    }
 
     r300->rs_state = rs;
+    /* XXX Clean these up when we move to atom emits */
     r300->dirty_state |= R300_NEW_RASTERIZER;
     r300->dirty_state |= R300_NEW_RS_BLOCK;
     r300->dirty_state |= R300_NEW_SCISSOR;
     r300->dirty_state |= R300_NEW_VIEWPORT;
+    if (r300->fs && r300->fs->inputs.wpos != ATTR_UNUSED) {
+        r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
+    }
 }
 
 /* Free rasterizer state. */
@@ -448,6 +742,9 @@ static void*
     struct r300_context* r300 = r300_context(pipe);
     struct r300_sampler_state* sampler = CALLOC_STRUCT(r300_sampler_state);
     int lod_bias;
+    union util_color uc;
+
+    sampler->state = *state;
 
     sampler->filter0 |=
         (r300_translate_wrap(state->wrap_s) << R300_TX_WRAP_S_SHIFT) |
@@ -456,7 +753,13 @@ static void*
 
     sampler->filter0 |= r300_translate_tex_filters(state->min_img_filter,
                                                    state->mag_img_filter,
-                                                   state->min_mip_filter);
+                                                   state->min_mip_filter,
+                                                   state->max_anisotropy > 1.0);
+
+    /* Unfortunately, r300-r500 don't support floating-point mipmap lods. */
+    /* We must pass these to the emit function to clamp them properly. */
+    sampler->min_lod = MAX2((unsigned)state->min_lod, 0);
+    sampler->max_lod = MAX2((unsigned)ceilf(state->max_lod), 0);
 
     lod_bias = CLAMP((int)(state->lod_bias * 32), -(1 << 9), (1 << 9) - 1);
 
@@ -464,8 +767,8 @@ static void*
 
     sampler->filter1 |= r300_anisotropy(state->max_anisotropy);
 
-    util_pack_color(state->border_color, PIPE_FORMAT_A8R8G8B8_UNORM,
-                    &sampler->border_color);
+    util_pack_color(state->border_color, PIPE_FORMAT_A8R8G8B8_UNORM, &uc);
+    sampler->border_color = uc.ui;
 
     /* R500-specific fixups and optimizations */
     if (r300_screen(r300->context.screen)->caps->is_r500) {
@@ -494,6 +797,20 @@ static void r300_bind_sampler_states(struct pipe_context* pipe,
     }
 
     r300->sampler_count = count;
+
+    /* Pick a fragment shader based on the texture compare state. */
+    if (r300->fs && (r300->dirty_state & R300_ANY_NEW_SAMPLERS)) {
+        if (r300_pick_fragment_shader(r300)) {
+            r300->dirty_state |= R300_NEW_FRAGMENT_SHADER |
+                                 R300_NEW_FRAGMENT_SHADER_CONSTANTS;
+        }
+    }
+}
+
+static void r300_lacks_vertex_textures(struct pipe_context* pipe,
+                                       unsigned count,
+                                       void** states)
+{
 }
 
 static void r300_delete_sampler_state(struct pipe_context* pipe, void* state)
@@ -506,18 +823,26 @@ static void r300_set_sampler_textures(struct pipe_context* pipe,
                                       struct pipe_texture** texture)
 {
     struct r300_context* r300 = r300_context(pipe);
+    boolean is_r500 = r300_screen(r300->context.screen)->caps->is_r500;
     int i;
 
     /* XXX magic num */
     if (count > 8) {
         return;
     }
-
+    
     for (i = 0; i < count; i++) {
         if (r300->textures[i] != (struct r300_texture*)texture[i]) {
             pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
                 texture[i]);
             r300->dirty_state |= (R300_NEW_TEXTURE << i);
+
+            /* R300-specific - set the texrect factor in a fragment shader */
+            if (!is_r500 && r300->textures[i]->is_npot) {
+                /* XXX It would be nice to re-emit just 1 constant,
+                 * XXX not all of them */
+                r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
+            }
         }
     }
 
@@ -537,24 +862,13 @@ 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,
@@ -566,17 +880,14 @@ static void r300_set_viewport_state(struct pipe_context* pipe,
     r300->viewport_state->vte_control = R300_VTX_W0_FMT;
 
     if (state->scale[0] != 1.0f) {
-        assert(state->scale[0] != 0.0f);
         r300->viewport_state->xscale = state->scale[0];
         r300->viewport_state->vte_control |= R300_VPORT_X_SCALE_ENA;
     }
     if (state->scale[1] != 1.0f) {
-        assert(state->scale[1] != 0.0f);
         r300->viewport_state->yscale = state->scale[1];
         r300->viewport_state->vte_control |= R300_VPORT_Y_SCALE_ENA;
     }
     if (state->scale[2] != 1.0f) {
-        assert(state->scale[2] != 0.0f);
         r300->viewport_state->zscale = state->scale[2];
         r300->viewport_state->vte_control |= R300_VPORT_Z_SCALE_ENA;
     }
@@ -594,6 +905,9 @@ static void r300_set_viewport_state(struct pipe_context* pipe,
     }
 
     r300->dirty_state |= R300_NEW_VIEWPORT;
+    if (r300->fs && r300->fs->inputs.wpos != ATTR_UNUSED) {
+        r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
+    }
 }
 
 static void r300_set_vertex_buffers(struct pipe_context* pipe,
@@ -602,13 +916,16 @@ static void r300_set_vertex_buffers(struct pipe_context* pipe,
 {
     struct r300_context* r300 = r300_context(pipe);
 
-    memcpy(r300->vertex_buffers, buffers,
+    memcpy(r300->vertex_buffer, buffers,
         sizeof(struct pipe_vertex_buffer) * count);
-
     r300->vertex_buffer_count = count;
 
-    draw_flush(r300->draw);
-    draw_set_vertex_buffers(r300->draw, count, buffers);
+    if (r300->draw) {
+        draw_flush(r300->draw);
+        draw_set_vertex_buffers(r300->draw, count, buffers);
+    }
+
+    r300->dirty_state |= R300_NEW_VERTEX_FORMAT;
 }
 
 static void r300_set_vertex_elements(struct pipe_context* pipe,
@@ -617,8 +934,15 @@ static void r300_set_vertex_elements(struct pipe_context* pipe,
 {
     struct r300_context* r300 = r300_context(pipe);
 
-    draw_flush(r300->draw);
-    draw_set_vertex_elements(r300->draw, count, elements);
+    memcpy(r300->vertex_element,
+           elements,
+           sizeof(struct pipe_vertex_element) * count);
+    r300->vertex_element_count = count;
+
+    if (r300->draw) {
+        draw_flush(r300->draw);
+        draw_set_vertex_elements(r300->draw, count, elements);
+    }
 }
 
 static void* r300_create_vs_state(struct pipe_context* pipe,
@@ -634,9 +958,6 @@ static void* r300_create_vs_state(struct pipe_context* pipe,
 
         tgsi_scan_shader(shader->tokens, &vs->info);
 
-        /* Appease Draw. */
-        vs->draw = draw_create_vertex_shader(r300->draw, shader);
-
         return (void*)vs;
     } else {
         return draw_create_vertex_shader(r300->draw, shader);
@@ -647,8 +968,6 @@ static void r300_bind_vs_state(struct pipe_context* pipe, void* shader)
 {
     struct r300_context* r300 = r300_context(pipe);
 
-    draw_flush(r300->draw);
-
     if (r300_screen(pipe->screen)->caps->has_tcl) {
         struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
 
@@ -659,10 +978,16 @@ static void r300_bind_vs_state(struct pipe_context* pipe, void* shader)
             r300_translate_vertex_shader(r300, vs);
         }
 
-        draw_bind_vertex_shader(r300->draw, vs->draw);
         r300->vs = vs;
-        r300->dirty_state |= R300_NEW_VERTEX_SHADER;
+        if (r300->fs) {
+            r300_vertex_shader_setup_wpos(r300);
+        }
+
+        r300->dirty_state |=
+            R300_NEW_VERTEX_SHADER | R300_NEW_VERTEX_SHADER_CONSTANTS |
+            R300_NEW_VERTEX_FORMAT;
     } else {
+        draw_flush(r300->draw);
         draw_bind_vertex_shader(r300->draw,
                 (struct draw_vertex_shader*)shader);
     }
@@ -676,8 +1001,7 @@ static void r300_delete_vs_state(struct pipe_context* pipe, void* shader)
         struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
 
         rc_constants_destroy(&vs->code.constants);
-        draw_delete_vertex_shader(r300->draw, vs->draw);
-        FREE(vs->state.tokens);
+        FREE((void*)vs->state.tokens);
         FREE(shader);
     } else {
         draw_delete_vertex_shader(r300->draw,
@@ -685,6 +1009,31 @@ static void r300_delete_vs_state(struct pipe_context* pipe, void* shader)
     }
 }
 
+static void r300_set_constant_buffer(struct pipe_context *pipe,
+                                     uint shader, uint index,
+                                     const struct pipe_constant_buffer *buf)
+{
+    struct r300_context* r300 = r300_context(pipe);
+    void *mapped;
+
+    if (buf == NULL || buf->buffer->size == 0 ||
+        (mapped = pipe_buffer_map(pipe->screen, buf->buffer, PIPE_BUFFER_USAGE_CPU_READ)) == NULL)
+    {
+        r300->shader_constants[shader].count = 0;
+        return;
+    }
+
+    assert((buf->buffer->size % 4 * sizeof(float)) == 0);
+    memcpy(r300->shader_constants[shader].constants, mapped, buf->buffer->size);
+    r300->shader_constants[shader].count = buf->buffer->size / (4 * sizeof(float));
+    pipe_buffer_unmap(pipe->screen, buf->buffer);
+
+    if (shader == PIPE_SHADER_VERTEX)
+        r300->dirty_state |= R300_NEW_VERTEX_SHADER_CONSTANTS;
+    else if (shader == PIPE_SHADER_FRAGMENT)
+        r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
+}
+
 void r300_init_state_functions(struct r300_context* r300)
 {
     r300->context.create_blend_state = r300_create_blend_state;
@@ -701,8 +1050,6 @@ void r300_init_state_functions(struct r300_context* r300)
     r300->context.bind_depth_stencil_alpha_state = r300_bind_dsa_state;
     r300->context.delete_depth_stencil_alpha_state = r300_delete_dsa_state;
 
-    r300->context.set_edgeflags = r300_set_edgeflags;
-
     r300->context.set_framebuffer_state = r300_set_framebuffer_state;
 
     r300->context.create_fs_state = r300_create_fs_state;
@@ -716,10 +1063,11 @@ void r300_init_state_functions(struct r300_context* r300)
     r300->context.delete_rasterizer_state = r300_delete_rs_state;
 
     r300->context.create_sampler_state = r300_create_sampler_state;
-    r300->context.bind_sampler_states = r300_bind_sampler_states;
+    r300->context.bind_fragment_sampler_states = r300_bind_sampler_states;
+    r300->context.bind_vertex_sampler_states = r300_lacks_vertex_textures;
     r300->context.delete_sampler_state = r300_delete_sampler_state;
 
-    r300->context.set_sampler_textures = r300_set_sampler_textures;
+    r300->context.set_fragment_sampler_textures = r300_set_sampler_textures;
 
     r300->context.set_scissor_state = r300_set_scissor_state;