*
**********************************************************/
-#include "pipe/p_inlines.h"
+#include "util/u_inlines.h"
#include "pipe/p_defines.h"
#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "util/u_bitmask.h"
+#include "tgsi/tgsi_ureg.h"
#include "svga_context.h"
#include "svga_state.h"
#include "svga_cmd.h"
+#include "svga_resource_texture.h"
#include "svga_tgsi.h"
#include "svga_hw_reg.h"
static INLINE int compare_fs_keys( const struct svga_fs_compile_key *a,
const struct svga_fs_compile_key *b )
{
- unsigned keysize = svga_fs_key_size( a );
- return memcmp( a, b, keysize );
+ unsigned keysize_a = svga_fs_key_size( a );
+ unsigned keysize_b = svga_fs_key_size( b );
+
+ if (keysize_a != keysize_b) {
+ return (int)(keysize_a - keysize_b);
+ }
+ return memcmp( a, b, keysize_a );
}
}
+/**
+ * If we fail to compile a fragment shader (because it uses too many
+ * registers, for example) we'll use a dummy/fallback shader that
+ * simply emits a constant color.
+ */
+static const struct tgsi_token *
+get_dummy_fragment_shader(void)
+{
+ static const float red[4] = { 1.0, 0.0, 0.0, 0.0 };
+ struct ureg_program *ureg;
+ const struct tgsi_token *tokens;
+ struct ureg_src src;
+ struct ureg_dst dst;
+ unsigned num_tokens;
+
+ ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
+ if (!ureg)
+ return NULL;
+
+ dst = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
+ src = ureg_DECL_immediate(ureg, red, 4);
+ ureg_MOV(ureg, dst, src);
+ ureg_END(ureg);
+
+ tokens = ureg_get_tokens(ureg, &num_tokens);
+
+ ureg_destroy(ureg);
+
+ return tokens;
+}
+
+
static enum pipe_error compile_fs( struct svga_context *svga,
struct svga_fragment_shader *fs,
const struct svga_fs_compile_key *key,
struct svga_shader_result **out_result )
{
struct svga_shader_result *result;
- enum pipe_error ret;
+ enum pipe_error ret = PIPE_ERROR;
result = svga_translate_fragment_program( fs, key );
if (result == NULL) {
+ /* some problem during translation, try the dummy shader */
+ const struct tgsi_token *dummy = get_dummy_fragment_shader();
+ if (!dummy) {
+ ret = PIPE_ERROR_OUT_OF_MEMORY;
+ goto fail;
+ }
+ debug_printf("Failed to compile fragment shader, using dummy shader instead.\n");
+ FREE((void *) fs->base.tokens);
+ fs->base.tokens = dummy;
+ result = svga_translate_fragment_program(fs, key);
+ if (result == NULL) {
+ ret = PIPE_ERROR;
+ goto fail;
+ }
+ }
+
+ result->id = util_bitmask_add(svga->fs_bm);
+ if(result->id == UTIL_BITMASK_INVALID_INDEX) {
ret = PIPE_ERROR_OUT_OF_MEMORY;
goto fail;
}
-
ret = SVGA3D_DefineShader(svga->swc,
- svga->state.next_fs_id,
+ result->id,
SVGA3D_SHADERTYPE_PS,
result->tokens,
result->nr_tokens * sizeof result->tokens[0]);
- if (ret)
+ if (ret != PIPE_OK)
goto fail;
*out_result = result;
- result->id = svga->state.next_fs_id++;
result->next = fs->base.results;
fs->base.results = result;
return PIPE_OK;
fail:
- if (result)
+ if (result) {
+ if (result->id != UTIL_BITMASK_INVALID_INDEX)
+ util_bitmask_clear( svga->fs_bm, result->id );
svga_destroy_shader_result( result );
+ }
return ret;
}
-/* The blend workaround for simulating logicop xor behaviour requires
- * that the incoming fragment color be white. This change achieves
- * that by hooking up a hard-wired fragment shader that just emits
- * color 1,1,1,1
- *
- * This is a slightly incomplete solution as it assumes that the
- * actual bound shader has no other effects beyond generating a
- * fragment color. In particular shaders containing TEXKIL and/or
- * depth-write will not have the correct behaviour, nor will those
- * expecting to use alphatest.
- *
- * These are avoidable issues, but they are not much worse than the
- * unavoidable ones associated with this technique, so it's not clear
- * how much effort should be expended trying to resolve them - the
- * ultimate result will still not be correct in most cases.
- *
- * Shader below was generated with:
- * SVGA_DEBUG=tgsi ./mesa/progs/fp/fp-tri white.txt
- */
-static int emit_white_fs( struct svga_context *svga )
-{
- int ret;
-
- /* ps_3_0
- * def c0, 1.000000, 0.000000, 0.000000, 1.000000
- * mov oC0, c0.x
- * end
- */
- static const unsigned white_tokens[] = {
- 0xffff0300,
- 0x05000051,
- 0xa00f0000,
- 0x3f800000,
- 0x00000000,
- 0x00000000,
- 0x3f800000,
- 0x02000001,
- 0x800f0800,
- 0xa0000000,
- 0x0000ffff,
- };
-
- ret = SVGA3D_DefineShader(svga->swc,
- svga->state.next_fs_id,
- SVGA3D_SHADERTYPE_PS,
- white_tokens,
- sizeof(white_tokens));
- if (ret)
- return ret;
-
- svga->state.white_fs_id = svga->state.next_fs_id++;
- return 0;
-}
-
/* SVGA_NEW_TEXTURE_BINDING
* SVGA_NEW_RAST
* SVGA_NEW_NEED_SWTNL
* SVGA_NEW_SAMPLER
*/
-static int make_fs_key( const struct svga_context *svga,
- struct svga_fs_compile_key *key )
+static enum pipe_error
+make_fs_key(const struct svga_context *svga,
+ struct svga_fragment_shader *fs,
+ struct svga_fs_compile_key *key)
{
- int i;
+ unsigned i;
int idx = 0;
memset(key, 0, sizeof *key);
/* SVGA_NEW_RAST
*/
key->light_twoside = svga->curr.rast->templ.light_twoside;
- key->front_cw = (svga->curr.rast->templ.front_winding ==
- PIPE_WINDING_CW);
+ key->front_ccw = svga->curr.rast->templ.front_ccw;
}
+ /* The blend workaround for simulating logicop xor behaviour
+ * requires that the incoming fragment color be white. This change
+ * achieves that by creating a variant of the current fragment
+ * shader that overrides all output colors with 1,1,1,1
+ *
+ * This will work for most shaders, including those containing
+ * TEXKIL and/or depth-write. However, it will break on the
+ * combination of xor-logicop plus alphatest.
+ *
+ * Ultimately, we could implement alphatest in the shader using
+ * texkil prior to overriding the outgoing fragment color.
+ *
+ * SVGA_NEW_BLEND
+ */
+ if (svga->curr.blend->need_white_fragments) {
+ key->white_fragments = 1;
+ }
/* XXX: want to limit this to the textures that the shader actually
* refers to.
*
* SVGA_NEW_TEXTURE_BINDING | SVGA_NEW_SAMPLER
*/
- for (i = 0; i < svga->curr.num_textures; i++) {
- if (svga->curr.texture[i]) {
+ for (i = 0; i < svga->curr.num_sampler_views; i++) {
+ if (svga->curr.sampler_views[i]) {
assert(svga->curr.sampler[i]);
- key->tex[i].texture_target = svga->curr.texture[i]->target;
+ assert(svga->curr.sampler_views[i]->texture);
+ key->tex[i].texture_target = svga->curr.sampler_views[i]->texture->target;
if (!svga->curr.sampler[i]->normalized_coords) {
key->tex[i].width_height_idx = idx++;
key->tex[i].unnormalized = TRUE;
++key->num_unnormalized_coords;
}
+
+ key->tex[i].swizzle_r = svga->curr.sampler_views[i]->swizzle_r;
+ key->tex[i].swizzle_g = svga->curr.sampler_views[i]->swizzle_g;
+ key->tex[i].swizzle_b = svga->curr.sampler_views[i]->swizzle_b;
+ key->tex[i].swizzle_a = svga->curr.sampler_views[i]->swizzle_a;
}
}
- key->num_textures = svga->curr.num_textures;
+ key->num_textures = svga->curr.num_sampler_views;
idx = 0;
for (i = 0; i < svga->curr.num_samplers; ++i) {
- if (svga->curr.sampler[i]) {
- key->tex[i].compare_mode = svga->curr.sampler[i]->compare_mode;
- key->tex[i].compare_func = svga->curr.sampler[i]->compare_func;
+ if (svga->curr.sampler_views[i]) {
+ struct pipe_resource *tex = svga->curr.sampler_views[i]->texture;
+ struct svga_texture *stex = svga_texture(tex);
+ SVGA3dSurfaceFormat format = stex->key.format;
+
+ if (format == SVGA3D_Z_D16 ||
+ format == SVGA3D_Z_D24X8 ||
+ format == SVGA3D_Z_D24S8) {
+ /* If we're sampling from a SVGA3D_Z_D16, SVGA3D_Z_D24X8,
+ * or SVGA3D_Z_D24S8 surface, we'll automatically get
+ * shadow comparison. But we only get LEQUAL mode.
+ * Set TEX_COMPARE_NONE here so we don't emit the extra FS
+ * code for shadow comparison.
+ */
+ key->tex[i].compare_mode = PIPE_TEX_COMPARE_NONE;
+ key->tex[i].compare_func = PIPE_FUNC_NEVER;
+ /* These depth formats _only_ support comparison mode and
+ * not ordinary sampling so warn if the later is expected.
+ */
+ if (svga->curr.sampler[i]->compare_mode !=
+ PIPE_TEX_COMPARE_R_TO_TEXTURE) {
+ debug_warn_once("Unsupported shadow compare mode");
+ }
+ /* The only supported comparison mode is LEQUAL */
+ if (svga->curr.sampler[i]->compare_func != PIPE_FUNC_LEQUAL) {
+ debug_warn_once("Unsupported shadow compare function");
+ }
+ }
+ else {
+ /* For other texture formats, just use the compare func/mode
+ * as-is. Should be no-ops for color textures. For depth
+ * textures, we do not get automatic depth compare. We have
+ * to do it ourselves in the shader. And we don't get PCF.
+ */
+ key->tex[i].compare_mode = svga->curr.sampler[i]->compare_mode;
+ key->tex[i].compare_func = svga->curr.sampler[i]->compare_func;
+ }
}
}
- return 0;
+ /* sprite coord gen state */
+ for (i = 0; i < svga->curr.num_samplers; ++i) {
+ key->tex[i].sprite_texgen =
+ svga->curr.rast->templ.sprite_coord_enable & (1 << i);
+ }
+
+ key->sprite_origin_lower_left = (svga->curr.rast->templ.sprite_coord_mode
+ == PIPE_SPRITE_COORD_LOWER_LEFT);
+
+ return PIPE_OK;
}
-static int emit_hw_fs( struct svga_context *svga,
- unsigned dirty )
+static enum pipe_error
+emit_hw_fs(struct svga_context *svga, unsigned dirty)
{
struct svga_shader_result *result = NULL;
unsigned id = SVGA3D_INVALID_ID;
- int ret = 0;
+ enum pipe_error ret = PIPE_OK;
+
+ struct svga_fragment_shader *fs = svga->curr.fs;
+ struct svga_fs_compile_key key;
/* SVGA_NEW_BLEND
+ * SVGA_NEW_TEXTURE_BINDING
+ * SVGA_NEW_RAST
+ * SVGA_NEW_NEED_SWTNL
+ * SVGA_NEW_SAMPLER
*/
- if (svga->curr.blend->need_white_fragments) {
- if (svga->state.white_fs_id == SVGA3D_INVALID_ID) {
- ret = emit_white_fs( svga );
- if (ret)
- return ret;
- }
- id = svga->state.white_fs_id;
- }
- else {
- struct svga_fragment_shader *fs = svga->curr.fs;
- struct svga_fs_compile_key key;
-
- /* SVGA_NEW_TEXTURE_BINDING
- * SVGA_NEW_RAST
- * SVGA_NEW_NEED_SWTNL
- * SVGA_NEW_SAMPLER
- */
- ret = make_fs_key( svga, &key );
- if (ret)
- return ret;
-
- result = search_fs_key( fs, &key );
- if (!result) {
- ret = compile_fs( svga, fs, &key, &result );
- if (ret)
- return ret;
- }
+ ret = make_fs_key( svga, fs, &key );
+ if (ret != PIPE_OK)
+ return ret;
- assert (result);
- id = result->id;
+ result = search_fs_key( fs, &key );
+ if (!result) {
+ ret = compile_fs( svga, fs, &key, &result );
+ if (ret != PIPE_OK)
+ return ret;
}
+ assert (result);
+ id = result->id;
+
assert(id != SVGA3D_INVALID_ID);
- if (id != svga->state.hw_draw.shader_id[PIPE_SHADER_FRAGMENT]) {
- ret = SVGA3D_SetShader(svga->swc,
- SVGA3D_SHADERTYPE_PS,
+ if (result != svga->state.hw_draw.fs) {
+ ret = SVGA3D_SetShader(svga->swc,
+ SVGA3D_SHADERTYPE_PS,
id );
- if (ret)
+ if (ret != PIPE_OK)
return ret;
svga->dirty |= SVGA_NEW_FS_RESULT;
- svga->state.hw_draw.shader_id[PIPE_SHADER_FRAGMENT] = id;
svga->state.hw_draw.fs = result;
}
- return 0;
+ return PIPE_OK;
}
struct svga_tracked_state svga_hw_fs =
projects / mesa.git / blobdiff