gallium: rename shader cap MAX_CONSTS to MAX_CONST_BUFFER_SIZE

[mesa.git] / src / gallium / drivers / r300 / r300_texture_desc.c

diff --git a/src/gallium/drivers/r300/r300_texture_desc.c b/src/gallium/drivers/r300/r300_texture_desc.c
index c5636ca3bcc8d7c209c896adefcbf50849a1fc60..8fa98c5804e02281fc949f0e5bc3b544c444f92b 100644 (file)
--- a/src/gallium/drivers/r300/r300_texture_desc.c
+++ b/src/gallium/drivers/r300/r300_texture_desc.c
@@ -349,6 +349,7 @@ static void r300_setup_hyperz_properties(struct r300_screen *screen,
     static unsigned hiz_align_y[4] = {8, 8, 8, 32};
 
     if (util_format_is_depth_or_stencil(tex->b.b.format) &&
+        util_format_get_blocksizebits(tex->b.b.format) == 32 &&
         tex->tex.microtile) {
         unsigned i, pipes;
 
@@ -416,6 +417,10 @@ static void r300_setup_cmask_properties(struct r300_screen *screen,
     static unsigned cmask_align_y[4] = {16, 16, 16, 32};
     unsigned pipes, stride, cmask_num_dw, cmask_max_size;
 
+    if (!screen->caps.has_cmask) {
+        return;
+    }
+
     /* We need an AA colorbuffer, no mipmaps. */
     if (tex->b.b.nr_samples <= 1 ||
         tex->b.b.last_level > 0 ||
@@ -424,7 +429,8 @@ static void r300_setup_cmask_properties(struct r300_screen *screen,
     }
 
     /* FP16 AA needs R500 and a fairly new DRM. */
-    if (tex->b.b.format == PIPE_FORMAT_R16G16B16A16_FLOAT &&
+    if ((tex->b.b.format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
+         tex->b.b.format == PIPE_FORMAT_R16G16B16X16_FLOAT) &&
         (!screen->caps.is_r500 || screen->info.drm_minor < 29)) {
         return;
     }
@@ -476,6 +482,10 @@ static void r300_setup_tiling(struct r300_screen *screen,
     tex->tex.microtile = RADEON_LAYOUT_LINEAR;
     tex->tex.macrotile[0] = RADEON_LAYOUT_LINEAR;
 
+    if (tex->b.b.usage == PIPE_USAGE_STAGING) {
+       return;
+    }
+
     if (!util_format_is_plain(format)) {
         return;
     }
@@ -542,6 +552,39 @@ void r300_texture_desc_init(struct r300_screen *rscreen,
     tex->tex.height0 = base->height0;
     tex->tex.depth0 = base->depth0;
 
+    /* There is a CB memory addressing hardware bug that limits the width
+     * of the MSAA buffer in some cases in R520. In order to get around it,
+     * the following code lowers the sample count depending on the format and
+     * the width.
+     *
+     * The only catch is that all MSAA colorbuffers and a zbuffer which are
+     * supposed to be used together should always be bound together. Only
+     * then the correct minimum sample count of all bound buffers is used
+     * for rendering. */
+    if (rscreen->caps.is_r500) {
+        /* FP16 6x MSAA buffers are limited to a width of 1360 pixels. */
+        if ((tex->b.b.format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
+             tex->b.b.format == PIPE_FORMAT_R16G16B16X16_FLOAT) &&
+            tex->b.b.nr_samples == 6 && tex->b.b.width0 > 1360) {
+            tex->b.b.nr_samples = 4;
+        }
+
+        /* FP16 4x MSAA buffers are limited to a width of 2048 pixels. */
+        if ((tex->b.b.format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
+             tex->b.b.format == PIPE_FORMAT_R16G16B16X16_FLOAT) &&
+            tex->b.b.nr_samples == 4 && tex->b.b.width0 > 2048) {
+            tex->b.b.nr_samples = 2;
+        }
+    }
+
+    /* 32-bit 6x MSAA buffers are limited to a width of 2720 pixels.
+     * This applies to all R300-R500 cards. */
+    if (util_format_get_blocksizebits(tex->b.b.format) == 32 &&
+        !util_format_is_depth_or_stencil(tex->b.b.format) &&
+        tex->b.b.nr_samples == 6 && tex->b.b.width0 > 2720) {
+        tex->b.b.nr_samples = 4;
+    }
+
     r300_setup_flags(tex);
 
     /* Align a 3D NPOT texture to POT. */