#include "r300_screen_buffer.h"
#include "r300_emit.h"
#include "r300_reg.h"
-#include "r300_state_derived.h"
#include <limits.h>
static uint32_t r300_translate_primitive(unsigned prim)
{
- switch (prim) {
- case PIPE_PRIM_POINTS:
- return R300_VAP_VF_CNTL__PRIM_POINTS;
- case PIPE_PRIM_LINES:
- return R300_VAP_VF_CNTL__PRIM_LINES;
- case PIPE_PRIM_LINE_LOOP:
- return R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
- case PIPE_PRIM_LINE_STRIP:
- return R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
- case PIPE_PRIM_TRIANGLES:
- return R300_VAP_VF_CNTL__PRIM_TRIANGLES;
- case PIPE_PRIM_TRIANGLE_STRIP:
- return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
- case PIPE_PRIM_TRIANGLE_FAN:
- return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
- case PIPE_PRIM_QUADS:
- return R300_VAP_VF_CNTL__PRIM_QUADS;
- case PIPE_PRIM_QUAD_STRIP:
- return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
- case PIPE_PRIM_POLYGON:
- return R300_VAP_VF_CNTL__PRIM_POLYGON;
- default:
- return 0;
- }
+ static const int prim_conv[] = {
+ R300_VAP_VF_CNTL__PRIM_POINTS,
+ R300_VAP_VF_CNTL__PRIM_LINES,
+ R300_VAP_VF_CNTL__PRIM_LINE_LOOP,
+ R300_VAP_VF_CNTL__PRIM_LINE_STRIP,
+ R300_VAP_VF_CNTL__PRIM_TRIANGLES,
+ R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP,
+ R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN,
+ R300_VAP_VF_CNTL__PRIM_QUADS,
+ R300_VAP_VF_CNTL__PRIM_QUAD_STRIP,
+ R300_VAP_VF_CNTL__PRIM_POLYGON,
+ -1,
+ -1,
+ -1,
+ -1
+ };
+ unsigned hwprim = prim_conv[prim];
+
+ assert(hwprim != -1);
+ return hwprim;
}
static uint32_t r300_provoking_vertex_fixes(struct r300_context *r300,
END_CS;
}
+static void r300_emit_draw_init(struct r300_context *r300, unsigned mode,
+ unsigned max_index)
+{
+ CS_LOCALS(r300);
+
+ assert(max_index < (1 << 24));
+
+ BEGIN_CS(5);
+ OUT_CS_REG(R300_GA_COLOR_CONTROL,
+ r300_provoking_vertex_fixes(r300, mode));
+ OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2);
+ OUT_CS(max_index);
+ OUT_CS(0);
+ END_CS;
+}
+
/* This function splits the index bias value into two parts:
* - buffer_offset: the value that can be safely added to buffer offsets
- * in r300_emit_aos (it must yield a positive offset when added to
+ * in r300_emit_vertex_arrays (it must yield a positive offset when added to
* a vertex buffer offset)
* - index_offset: the value that must be manually subtracted from indices
* in an index buffer to achieve negative offsets. */
}
enum r300_prepare_flags {
- PREP_FIRST_DRAW = (1 << 0), /* call emit_dirty_state and friends? */
+ PREP_EMIT_STATES = (1 << 0), /* call emit_dirty_state and friends? */
PREP_VALIDATE_VBOS = (1 << 1), /* validate VBOs? */
- PREP_EMIT_AOS = (1 << 2), /* call emit_aos? */
- PREP_EMIT_AOS_SWTCL = (1 << 3), /* call emit_aos_swtcl? */
+ PREP_EMIT_VARRAYS = (1 << 2), /* call emit_vertex_arrays? */
+ PREP_EMIT_VARRAYS_SWTCL = (1 << 3), /* call emit_vertex_arrays_swtcl? */
PREP_INDEXED = (1 << 4) /* is this draw_elements? */
};
* \return TRUE if the CS was flushed
*/
static boolean r300_reserve_cs_dwords(struct r300_context *r300,
- enum r300_prepare_flags flags,
- unsigned cs_dwords)
+ enum r300_prepare_flags flags,
+ unsigned cs_dwords)
{
boolean flushed = FALSE;
- boolean first_draw = flags & PREP_FIRST_DRAW;
- boolean emit_aos = flags & PREP_EMIT_AOS;
- boolean emit_aos_swtcl = flags & PREP_EMIT_AOS_SWTCL;
+ boolean emit_states = flags & PREP_EMIT_STATES;
+ boolean emit_vertex_arrays = flags & PREP_EMIT_VARRAYS;
+ boolean emit_vertex_arrays_swtcl = flags & PREP_EMIT_VARRAYS_SWTCL;
/* Add dirty state, index offset, and AOS. */
- if (first_draw) {
+ if (emit_states)
cs_dwords += r300_get_num_dirty_dwords(r300);
- if (r300->screen->caps.index_bias_supported)
- cs_dwords += 2; /* emit_index_offset */
+ if (r300->screen->caps.is_r500)
+ cs_dwords += 2; /* emit_index_offset */
- if (emit_aos)
- cs_dwords += 55; /* emit_aos */
+ if (emit_vertex_arrays)
+ cs_dwords += 55; /* emit_vertex_arrays */
- if (emit_aos_swtcl)
- cs_dwords += 7; /* emit_aos_swtcl */
- }
+ if (emit_vertex_arrays_swtcl)
+ cs_dwords += 7; /* emit_vertex_arrays_swtcl */
cs_dwords += r300_get_num_cs_end_dwords(r300);
/* Reserve requested CS space. */
- if (cs_dwords > (R300_MAX_CMDBUF_DWORDS - r300->cs->cdw)) {
- r300->context.flush(&r300->context, 0, NULL);
+ if (cs_dwords > (RADEON_MAX_CMDBUF_DWORDS - r300->cs->cdw)) {
+ r300_flush(&r300->context, RADEON_FLUSH_ASYNC, NULL);
flushed = TRUE;
}
* \param r300 The context.
* \param flags See r300_prepare_flags.
* \param index_buffer The index buffer to validate. The parameter may be NULL.
- * \param aos_offset The offset passed to emit_aos.
+ * \param buffer_offset The offset passed to emit_vertex_arrays.
* \param index_bias The index bias to emit.
+ * \param instance_id Index of instance to render
* \return TRUE if rendering should be skipped
*/
static boolean r300_emit_states(struct r300_context *r300,
enum r300_prepare_flags flags,
struct pipe_resource *index_buffer,
- int aos_offset,
- int index_bias)
+ int buffer_offset,
+ int index_bias, int instance_id)
{
- boolean first_draw = flags & PREP_FIRST_DRAW;
- boolean emit_aos = flags & PREP_EMIT_AOS;
- boolean emit_aos_swtcl = flags & PREP_EMIT_AOS_SWTCL;
+ boolean emit_states = flags & PREP_EMIT_STATES;
+ boolean emit_vertex_arrays = flags & PREP_EMIT_VARRAYS;
+ boolean emit_vertex_arrays_swtcl = flags & PREP_EMIT_VARRAYS_SWTCL;
boolean indexed = flags & PREP_INDEXED;
boolean validate_vbos = flags & PREP_VALIDATE_VBOS;
/* Validate buffers and emit dirty state if needed. */
- if (first_draw) {
- /* upload buffers first */
- if (r300->screen->caps.has_tcl && r300->any_user_vbs) {
- r300_upload_user_buffers(r300);
- r300->any_user_vbs = false;
- }
-
- if (r300->validate_buffers) {
- if (!r300_emit_buffer_validate(r300, validate_vbos,
- index_buffer)) {
- fprintf(stderr, "r300: CS space validation failed. "
- "(not enough memory?) Skipping rendering.\n");
- return FALSE;
- }
-
- /* Consider the validation done only if everything was validated. */
- if (validate_vbos) {
- r300->validate_buffers = FALSE;
- }
+ if (emit_states || (emit_vertex_arrays && validate_vbos)) {
+ if (!r300_emit_buffer_validate(r300, validate_vbos,
+ index_buffer)) {
+ fprintf(stderr, "r300: CS space validation failed. "
+ "(not enough memory?) Skipping rendering.\n");
+ return FALSE;
}
+ }
+ if (emit_states)
r300_emit_dirty_state(r300);
- if (r300->screen->caps.index_bias_supported) {
- if (r300->screen->caps.has_tcl)
- r500_emit_index_bias(r300, index_bias);
- else
- r500_emit_index_bias(r300, 0);
- }
- if (emit_aos)
- r300_emit_aos(r300, aos_offset, indexed);
+ if (r300->screen->caps.is_r500) {
+ if (r300->screen->caps.has_tcl)
+ r500_emit_index_bias(r300, index_bias);
+ else
+ r500_emit_index_bias(r300, 0);
+ }
- if (emit_aos_swtcl)
- r300_emit_aos_swtcl(r300, indexed);
+ if (emit_vertex_arrays &&
+ (r300->vertex_arrays_dirty ||
+ r300->vertex_arrays_indexed != indexed ||
+ r300->vertex_arrays_offset != buffer_offset ||
+ r300->vertex_arrays_instance_id != instance_id)) {
+ r300_emit_vertex_arrays(r300, buffer_offset, indexed, instance_id);
+
+ r300->vertex_arrays_dirty = FALSE;
+ r300->vertex_arrays_indexed = indexed;
+ r300->vertex_arrays_offset = buffer_offset;
+ r300->vertex_arrays_instance_id = instance_id;
}
+ if (emit_vertex_arrays_swtcl)
+ r300_emit_vertex_arrays_swtcl(r300, indexed);
+
return TRUE;
}
* \param flags See r300_prepare_flags.
* \param index_buffer The index buffer to validate. The parameter may be NULL.
* \param cs_dwords The number of dwords to reserve in CS.
- * \param aos_offset The offset passed to emit_aos.
+ * \param buffer_offset The offset passed to emit_vertex_arrays.
* \param index_bias The index bias to emit.
+ * \param instance_id The instance to render.
* \return TRUE if rendering should be skipped
*/
static boolean r300_prepare_for_rendering(struct r300_context *r300,
enum r300_prepare_flags flags,
struct pipe_resource *index_buffer,
unsigned cs_dwords,
- int aos_offset,
- int index_bias)
+ int buffer_offset,
+ int index_bias,
+ int instance_id)
{
+ /* Make sure there is enough space in the command stream and emit states. */
if (r300_reserve_cs_dwords(r300, flags, cs_dwords))
- flags |= PREP_FIRST_DRAW;
+ flags |= PREP_EMIT_STATES;
- return r300_emit_states(r300, flags, index_buffer, aos_offset, index_bias);
+ return r300_emit_states(r300, flags, index_buffer, buffer_offset,
+ index_bias, instance_id);
}
static boolean immd_is_good_idea(struct r300_context *r300,
unsigned count)
{
- struct pipe_vertex_element* velem;
- struct pipe_vertex_buffer* vbuf;
- boolean checked[PIPE_MAX_ATTRIBS] = {0};
- unsigned vertex_element_count = r300->velems->count;
- unsigned i, vbi;
-
if (DBG_ON(r300, DBG_NO_IMMD)) {
return FALSE;
}
- if (r300->draw) {
- return FALSE;
- }
-
if (count * r300->velems->vertex_size_dwords > IMMD_DWORDS) {
return FALSE;
}
- /* We shouldn't map buffers referenced by CS, busy buffers,
- * and ones placed in VRAM. */
- for (i = 0; i < vertex_element_count; i++) {
- velem = &r300->velems->velem[i];
- vbi = velem->vertex_buffer_index;
-
- if (!checked[vbi]) {
- vbuf = &r300->vertex_buffer[vbi];
-
- if (!(r300_buffer(vbuf->buffer)->domain & R300_DOMAIN_GTT)) {
- return FALSE;
- }
-
- if (r300_buffer_is_referenced(&r300->context,
- vbuf->buffer,
- R300_REF_CS | R300_REF_HW)) {
- /* It's a very bad idea to map it... */
- return FALSE;
- }
- checked[vbi] = TRUE;
- }
- }
+ /* Buffers can only be used for read by r300 (except query buffers, but
+ * those can't be bound by a state tracker as vertex buffers). */
return TRUE;
}
* The HWTCL draw functions. *
****************************************************************************/
-static void r300_emit_draw_arrays_immediate(struct r300_context *r300,
- unsigned mode,
- unsigned start,
- unsigned count)
+static void r300_draw_arrays_immediate(struct r300_context *r300,
+ const struct pipe_draw_info *info)
{
struct pipe_vertex_element* velem;
struct pipe_vertex_buffer* vbuf;
unsigned vertex_size = r300->velems->vertex_size_dwords;
/* The number of dwords for this draw operation. */
- unsigned dwords = 9 + count * vertex_size;
+ unsigned dwords = 4 + info->count * vertex_size;
/* Size of the vertex element, in dwords. */
unsigned size[PIPE_MAX_ATTRIBS];
unsigned stride[PIPE_MAX_ATTRIBS];
/* Mapped vertex buffers. */
- uint32_t* map[PIPE_MAX_ATTRIBS];
+ uint32_t* map[PIPE_MAX_ATTRIBS] = {0};
uint32_t* mapelem[PIPE_MAX_ATTRIBS];
- struct pipe_transfer* transfer[PIPE_MAX_ATTRIBS] = {0};
CS_LOCALS(r300);
- if (!r300_prepare_for_rendering(r300, PREP_FIRST_DRAW, NULL, dwords, 0, 0))
+ if (!r300_prepare_for_rendering(r300, PREP_EMIT_STATES, NULL, dwords, 0, 0, -1))
return;
/* Calculate the vertex size, offsets, strides etc. and map the buffers. */
for (i = 0; i < vertex_element_count; i++) {
velem = &r300->velems->velem[i];
- size[i] = r300->velems->hw_format_size[i] / 4;
+ size[i] = r300->velems->format_size[i] / 4;
vbi = velem->vertex_buffer_index;
vbuf = &r300->vertex_buffer[vbi];
stride[i] = vbuf->stride / 4;
/* Map the buffer. */
- if (!transfer[vbi]) {
- map[vbi] = (uint32_t*)pipe_buffer_map(&r300->context,
- vbuf->buffer,
- PIPE_TRANSFER_READ,
- &transfer[vbi]);
- map[vbi] += (vbuf->buffer_offset / 4) + stride[i] * start;
+ if (!map[vbi]) {
+ map[vbi] = (uint32_t*)r300->rws->buffer_map(
+ r300_resource(vbuf->buffer)->cs_buf,
+ r300->cs, PIPE_TRANSFER_READ | PIPE_TRANSFER_UNSYNCHRONIZED);
+ map[vbi] += (vbuf->buffer_offset / 4) + stride[i] * info->start;
}
mapelem[i] = map[vbi] + (velem->src_offset / 4);
}
+ r300_emit_draw_init(r300, info->mode, info->count-1);
+
BEGIN_CS(dwords);
- OUT_CS_REG(R300_GA_COLOR_CONTROL,
- r300_provoking_vertex_fixes(r300, mode));
OUT_CS_REG(R300_VAP_VTX_SIZE, vertex_size);
- OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2);
- OUT_CS(count - 1);
- OUT_CS(0);
- OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2, count * vertex_size);
- OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED | (count << 16) |
- r300_translate_primitive(mode));
+ OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2, info->count * vertex_size);
+ OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED | (info->count << 16) |
+ r300_translate_primitive(info->mode));
/* Emit vertices. */
- for (v = 0; v < count; v++) {
+ for (v = 0; v < info->count; v++) {
for (i = 0; i < vertex_element_count; i++) {
OUT_CS_TABLE(&mapelem[i][stride[i] * v], size[i]);
}
for (i = 0; i < vertex_element_count; i++) {
vbi = r300->velems->velem[i].vertex_buffer_index;
- if (transfer[vbi]) {
- vbuf = &r300->vertex_buffer[vbi];
- pipe_buffer_unmap(&r300->context, transfer[vbi]);
- transfer[vbi] = NULL;
+ if (map[vbi]) {
+ r300->rws->buffer_unmap(r300_resource(r300->vertex_buffer[vbi].buffer)->cs_buf);
+ map[vbi] = NULL;
}
}
}
return;
}
- BEGIN_CS(7 + (alt_num_verts ? 2 : 0));
+ r300_emit_draw_init(r300, mode, count-1);
+
+ BEGIN_CS(2 + (alt_num_verts ? 2 : 0));
if (alt_num_verts) {
OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count);
}
- OUT_CS_REG(R300_GA_COLOR_CONTROL,
- r300_provoking_vertex_fixes(r300, mode));
- OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2);
- OUT_CS(count - 1);
- OUT_CS(0);
OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
r300_translate_primitive(mode) |
static void r300_emit_draw_elements(struct r300_context *r300,
struct pipe_resource* indexBuffer,
unsigned indexSize,
- unsigned minIndex,
- unsigned maxIndex,
+ unsigned max_index,
unsigned mode,
unsigned start,
unsigned count,
if (count >= (1 << 24)) {
fprintf(stderr, "r300: Got a huge number of vertices: %i, "
- "refusing to render.\n", count);
+ "refusing to render (max_index: %i).\n", count, max_index);
return;
}
- maxIndex = MIN2(maxIndex, r300->vertex_buffer_max_index);
+ DBG(r300, DBG_DRAW, "r300: Indexbuf of %u indices, max %u\n",
+ count, max_index);
- DBG(r300, DBG_DRAW, "r300: Indexbuf of %u indices, min %u max %u\n",
- count, minIndex, maxIndex);
-
- BEGIN_CS(5);
- OUT_CS_REG(R300_GA_COLOR_CONTROL,
- r300_provoking_vertex_fixes(r300, mode));
- OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2);
- OUT_CS(maxIndex);
- OUT_CS(minIndex);
- END_CS;
+ r300_emit_draw_init(r300, mode, max_index);
/* If start is odd, render the first triangle with indices embedded
* in the command stream. This will increase start by 3 and make it
(alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0));
}
- /* INDX_BUFFER is a truly special packet3.
- * Unlike most other packet3, where the offset is after the count,
- * the order is reversed, so the relocation ends up carrying the
- * size of the indexbuf instead of the offset.
- */
OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER, 2);
OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2) |
(0 << R300_INDX_BUFFER_SKIP_SHIFT));
OUT_CS(offset_dwords << 2);
- OUT_CS_BUF_RELOC(indexBuffer, count_dwords,
- r300_buffer(indexBuffer)->domain, 0);
+ OUT_CS(count_dwords);
+ OUT_CS_RELOC(r300_resource(indexBuffer));
+ END_CS;
+}
+
+static void r300_draw_elements_immediate(struct r300_context *r300,
+ const struct pipe_draw_info *info)
+{
+ uint8_t *ptr1;
+ uint16_t *ptr2;
+ uint32_t *ptr4;
+ unsigned index_size = r300->index_buffer.index_size;
+ unsigned i, count_dwords = index_size == 4 ? info->count :
+ (info->count + 1) / 2;
+ CS_LOCALS(r300);
+
+ /* 19 dwords for r300_draw_elements_immediate. Give up if the function fails. */
+ if (!r300_prepare_for_rendering(r300,
+ PREP_EMIT_STATES | PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS |
+ PREP_INDEXED, NULL, 2+count_dwords, 0, info->index_bias, -1))
+ return;
+
+ r300_emit_draw_init(r300, info->mode, info->max_index);
+
+ BEGIN_CS(2 + count_dwords);
+ OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, count_dwords);
+
+ switch (index_size) {
+ case 1:
+ ptr1 = r300->index_buffer.buffer->user_ptr;
+ ptr1 += info->start;
+
+ OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (info->count << 16) |
+ r300_translate_primitive(info->mode));
+
+ if (info->index_bias && !r300->screen->caps.is_r500) {
+ for (i = 0; i < info->count-1; i += 2)
+ OUT_CS(((ptr1[i+1] + info->index_bias) << 16) |
+ (ptr1[i] + info->index_bias));
+
+ if (info->count & 1)
+ OUT_CS(ptr1[i] + info->index_bias);
+ } else {
+ for (i = 0; i < info->count-1; i += 2)
+ OUT_CS(((ptr1[i+1]) << 16) |
+ (ptr1[i] ));
+
+ if (info->count & 1)
+ OUT_CS(ptr1[i]);
+ }
+ break;
+
+ case 2:
+ ptr2 = (uint16_t*)r300->index_buffer.buffer->user_ptr;
+ ptr2 += info->start;
+
+ OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (info->count << 16) |
+ r300_translate_primitive(info->mode));
+
+ if (info->index_bias && !r300->screen->caps.is_r500) {
+ for (i = 0; i < info->count-1; i += 2)
+ OUT_CS(((ptr2[i+1] + info->index_bias) << 16) |
+ (ptr2[i] + info->index_bias));
+
+ if (info->count & 1)
+ OUT_CS(ptr2[i] + info->index_bias);
+ } else {
+ OUT_CS_TABLE(ptr2, count_dwords);
+ }
+ break;
+
+ case 4:
+ ptr4 = (uint32_t*)r300->index_buffer.buffer->user_ptr;
+ ptr4 += info->start;
+ OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (info->count << 16) |
+ R300_VAP_VF_CNTL__INDEX_SIZE_32bit |
+ r300_translate_primitive(info->mode));
+
+ if (info->index_bias && !r300->screen->caps.is_r500) {
+ for (i = 0; i < info->count; i++)
+ OUT_CS(ptr4[i] + info->index_bias);
+ } else {
+ OUT_CS_TABLE(ptr4, count_dwords);
+ }
+ break;
+ }
END_CS;
}
-/* This is the fast-path drawing & emission for HW TCL. */
-static void r300_draw_range_elements(struct pipe_context* pipe,
- struct pipe_resource* indexBuffer,
- unsigned indexSize,
- int indexBias,
- unsigned minIndex,
- unsigned maxIndex,
- unsigned mode,
- unsigned start,
- unsigned count)
+static void r300_draw_elements(struct r300_context *r300,
+ const struct pipe_draw_info *info,
+ int instance_id)
{
- struct r300_context* r300 = r300_context(pipe);
+ struct pipe_resource *indexBuffer = r300->index_buffer.buffer;
+ unsigned indexSize = r300->index_buffer.index_size;
struct pipe_resource* orgIndexBuffer = indexBuffer;
+ unsigned start = info->start;
+ unsigned count = info->count;
boolean alt_num_verts = r300->screen->caps.is_r500 &&
- count > 65536 &&
- r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0);
+ count > 65536;
unsigned short_count;
int buffer_offset = 0, index_offset = 0; /* for index bias emulation */
uint16_t indices3[3];
- if (indexBias && !r300->screen->caps.index_bias_supported) {
- r300_split_index_bias(r300, indexBias, &buffer_offset, &index_offset);
+ if (info->index_bias && !r300->screen->caps.is_r500) {
+ r300_split_index_bias(r300, info->index_bias, &buffer_offset, &index_offset);
}
r300_translate_index_buffer(r300, &indexBuffer, &indexSize, index_offset,
&start, count);
- r300_update_derived_state(r300);
-
/* Fallback for misaligned ushort indices. */
if (indexSize == 2 && (start & 1) &&
- !r300_buffer_is_user_buffer(indexBuffer)) {
- struct pipe_transfer *transfer;
- struct pipe_resource *userbuf;
-
- uint16_t *ptr = pipe_buffer_map(pipe, indexBuffer,
- PIPE_TRANSFER_READ, &transfer);
-
- if (mode == PIPE_PRIM_TRIANGLES) {
+ !indexBuffer->user_ptr) {
+ /* If we got here, then orgIndexBuffer == indexBuffer. */
+ uint16_t *ptr = r300->rws->buffer_map(r300_resource(orgIndexBuffer)->cs_buf,
+ r300->cs,
+ PIPE_TRANSFER_READ |
+ PIPE_TRANSFER_UNSYNCHRONIZED);
+
+ if (info->mode == PIPE_PRIM_TRIANGLES) {
memcpy(indices3, ptr + start, 6);
} else {
/* Copy the mapped index buffer directly to the upload buffer.
* The start index will be aligned simply from the fact that
- * every sub-buffer in u_upload_mgr is aligned. */
- userbuf = pipe->screen->user_buffer_create(pipe->screen,
- ptr + start, count * 2,
- PIPE_BIND_INDEX_BUFFER);
- indexBuffer = userbuf;
- r300_upload_index_buffer(r300, &indexBuffer, indexSize, 0, count, &start);
- pipe_resource_reference(&userbuf, NULL);
+ * every sub-buffer in the upload buffer is aligned. */
+ r300_upload_index_buffer(r300, &indexBuffer, indexSize, &start,
+ count, (uint8_t*)ptr);
}
- pipe_buffer_unmap(pipe, transfer);
+ r300->rws->buffer_unmap(r300_resource(orgIndexBuffer)->cs_buf);
} else {
- r300_upload_index_buffer(r300, &indexBuffer, indexSize, start, count, &start);
+ if (indexBuffer->user_ptr)
+ r300_upload_index_buffer(r300, &indexBuffer, indexSize,
+ &start, count,
+ indexBuffer->user_ptr);
}
/* 19 dwords for emit_draw_elements. Give up if the function fails. */
if (!r300_prepare_for_rendering(r300,
- PREP_FIRST_DRAW | PREP_VALIDATE_VBOS | PREP_EMIT_AOS |
- PREP_INDEXED, indexBuffer, 19, buffer_offset, indexBias))
+ PREP_EMIT_STATES | PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS |
+ PREP_INDEXED, indexBuffer, 19, buffer_offset, info->index_bias,
+ instance_id))
goto done;
if (alt_num_verts || count <= 65535) {
r300_emit_draw_elements(r300, indexBuffer, indexSize,
- minIndex, maxIndex, mode, start, count, indices3);
+ info->max_index, info->mode, start, count,
+ indices3);
} else {
do {
- short_count = MIN2(count, 65534);
+ /* The maximum must be divisible by 4 and 3,
+ * so that quad and triangle lists are split correctly.
+ *
+ * Strips, loops, and fans won't work. */
+ short_count = MIN2(count, 65532);
+
r300_emit_draw_elements(r300, indexBuffer, indexSize,
- minIndex, maxIndex,
- mode, start, short_count, indices3);
+ info->max_index,
+ info->mode, start, short_count, indices3);
start += short_count;
count -= short_count;
/* 15 dwords for emit_draw_elements */
if (count) {
if (!r300_prepare_for_rendering(r300,
- PREP_VALIDATE_VBOS | PREP_EMIT_AOS | PREP_INDEXED,
- indexBuffer, 19, buffer_offset, indexBias))
+ PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS | PREP_INDEXED,
+ indexBuffer, 19, buffer_offset, info->index_bias,
+ instance_id))
goto done;
}
} while (count);
}
}
-static void r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
- unsigned start, unsigned count)
+static void r300_draw_arrays(struct r300_context *r300,
+ const struct pipe_draw_info *info,
+ int instance_id)
{
- struct r300_context* r300 = r300_context(pipe);
boolean alt_num_verts = r300->screen->caps.is_r500 &&
- count > 65536 &&
- r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0);
+ info->count > 65536;
+ unsigned start = info->start;
+ unsigned count = info->count;
unsigned short_count;
- r300_update_derived_state(r300);
+ /* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
+ if (!r300_prepare_for_rendering(r300,
+ PREP_EMIT_STATES | PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS,
+ NULL, 9, start, 0, instance_id))
+ return;
- if (immd_is_good_idea(r300, count)) {
- r300_emit_draw_arrays_immediate(r300, mode, start, count);
+ if (alt_num_verts || count <= 65535) {
+ r300_emit_draw_arrays(r300, info->mode, count);
} else {
- /* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
- if (!r300_prepare_for_rendering(r300,
- PREP_FIRST_DRAW | PREP_VALIDATE_VBOS | PREP_EMIT_AOS,
- NULL, 9, start, 0))
- return;
+ do {
+ /* The maximum must be divisible by 4 and 3,
+ * so that quad and triangle lists are split correctly.
+ *
+ * Strips, loops, and fans won't work. */
+ short_count = MIN2(count, 65532);
+ r300_emit_draw_arrays(r300, info->mode, short_count);
- if (alt_num_verts || count <= 65535) {
- r300_emit_draw_arrays(r300, mode, count);
- } else {
- do {
- short_count = MIN2(count, 65535);
- r300_emit_draw_arrays(r300, mode, short_count);
-
- start += short_count;
- count -= short_count;
-
- /* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
- if (count) {
- if (!r300_prepare_for_rendering(r300,
- PREP_VALIDATE_VBOS | PREP_EMIT_AOS, NULL, 9,
- start, 0))
- return;
- }
- } while (count);
- }
+ start += short_count;
+ count -= short_count;
+
+ /* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
+ if (count) {
+ if (!r300_prepare_for_rendering(r300,
+ PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS, NULL, 9,
+ start, 0, instance_id))
+ return;
+ }
+ } while (count);
}
}
+static void r300_draw_arrays_instanced(struct r300_context *r300,
+ const struct pipe_draw_info *info)
+{
+ int i;
+
+ for (i = 0; i < info->instance_count; i++)
+ r300_draw_arrays(r300, info, i);
+}
+
+static void r300_draw_elements_instanced(struct r300_context *r300,
+ const struct pipe_draw_info *info)
+{
+ int i;
+
+ for (i = 0; i < info->instance_count; i++)
+ r300_draw_elements(r300, info, i);
+}
+
+static unsigned r300_max_vertex_count(struct r300_context *r300)
+{
+ unsigned i, nr = r300->velems->count;
+ struct pipe_vertex_element *velems = r300->velems->velem;
+ unsigned result = ~0;
+
+ for (i = 0; i < nr; i++) {
+ struct pipe_vertex_buffer *vb =
+ &r300->vertex_buffer[velems[i].vertex_buffer_index];
+ unsigned size, max_count, value;
+
+ /* We're not interested in constant and per-instance attribs. */
+ if (!vb->buffer ||
+ !vb->stride ||
+ velems[i].instance_divisor) {
+ continue;
+ }
+
+ size = vb->buffer->width0;
+
+ /* Subtract buffer_offset. */
+ value = vb->buffer_offset;
+ if (value >= size) {
+ return 0;
+ }
+ size -= value;
+
+ /* Subtract src_offset. */
+ value = velems[i].src_offset;
+ if (value >= size) {
+ return 0;
+ }
+ size -= value;
+
+ /* Subtract format_size. */
+ value = r300->velems->format_size[i];
+ if (value >= size) {
+ return 0;
+ }
+ size -= value;
+
+ /* Compute the max count. */
+ max_count = 1 + size / vb->stride;
+ result = MIN2(result, max_count);
+ }
+ return result;
+}
+
+
static void r300_draw_vbo(struct pipe_context* pipe,
- const struct pipe_draw_info *info)
+ const struct pipe_draw_info *dinfo)
{
struct r300_context* r300 = r300_context(pipe);
- unsigned count = info->count;
- boolean translate = FALSE;
- boolean indexed = info->indexed && r300->index_buffer.buffer;
- unsigned start_indexed = 0;
+ struct pipe_draw_info info = *dinfo;
- if (r300->skip_rendering) {
- return;
- }
+ info.indexed = info.indexed && r300->index_buffer.buffer;
- if (!u_trim_pipe_prim(info->mode, &count)) {
+ if (r300->skip_rendering ||
+ !u_trim_pipe_prim(info.mode, &info.count)) {
return;
}
- /* Index buffer range checking. */
- if (indexed) {
- assert(r300->index_buffer.offset % r300->index_buffer.index_size == 0);
+ r300_update_derived_state(r300);
- /* Compute start for draw_elements, taking the offset into account. */
- start_indexed =
- info->start +
- (r300->index_buffer.offset / r300->index_buffer.index_size);
+ /* Draw. */
+ if (info.indexed) {
+ unsigned max_count = r300_max_vertex_count(r300);
- if ((start_indexed + count) * r300->index_buffer.index_size >
- r300->index_buffer.buffer->width0) {
- fprintf(stderr, "r300: Invalid index buffer range. Skipping rendering.\n");
- return;
+ if (!max_count) {
+ fprintf(stderr, "r300: Skipping a draw command. There is a buffer "
+ " which is too small to be used for rendering.\n");
+ return;
}
- }
- /* Set up fallback for incompatible vertex layout if needed. */
- if (r300->incompatible_vb_layout || r300->velems->incompatible_layout) {
- r300_begin_vertex_translate(r300);
- translate = TRUE;
- }
+ if (max_count == ~0) {
+ /* There are no per-vertex vertex elements. Use the hardware maximum. */
+ max_count = 0xffffff;
+ }
- if (indexed) {
- r300_draw_range_elements(pipe,
- r300->index_buffer.buffer,
- r300->index_buffer.index_size,
- info->index_bias,
- info->min_index,
- info->max_index,
- info->mode,
- start_indexed,
- count);
- } else {
- r300_draw_arrays(pipe,
- info->mode,
- info->start,
- count);
- }
+ info.max_index = max_count - 1;
+ info.start += r300->index_buffer.offset / r300->index_buffer.index_size;
- if (translate) {
- r300_end_vertex_translate(r300);
+ if (info.instance_count <= 1) {
+ if (info.count <= 8 &&
+ r300->index_buffer.buffer->user_ptr) {
+ r300_draw_elements_immediate(r300, &info);
+ } else {
+ r300_draw_elements(r300, &info, -1);
+ }
+ } else {
+ r300_draw_elements_instanced(r300, &info);
+ }
+ } else {
+ if (info.instance_count <= 1) {
+ if (immd_is_good_idea(r300, info.count)) {
+ r300_draw_arrays_immediate(r300, &info);
+ } else {
+ r300_draw_arrays(r300, &info, -1);
+ }
+ } else {
+ r300_draw_arrays_instanced(r300, &info);
+ }
}
}
struct r300_context* r300 = r300_context(pipe);
struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS];
struct pipe_transfer *ib_transfer = NULL;
- unsigned count = info->count;
int i;
void *indices = NULL;
boolean indexed = info->indexed && r300->index_buffer.buffer;
return;
}
- if (!u_trim_pipe_prim(info->mode, &count)) {
- return;
- }
-
r300_update_derived_state(r300);
r300_reserve_cs_dwords(r300,
- PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL |
+ PREP_EMIT_STATES | PREP_EMIT_VARRAYS_SWTCL |
(indexed ? PREP_INDEXED : 0),
indexed ? 256 : 6);
- for (i = 0; i < r300->vertex_buffer_count; i++) {
+ for (i = 0; i < r300->nr_vertex_buffers; i++) {
if (r300->vertex_buffer[i].buffer) {
void *buf = pipe_buffer_map(pipe,
r300->vertex_buffer[i].buffer,
- PIPE_TRANSFER_READ,
+ PIPE_TRANSFER_READ |
+ PIPE_TRANSFER_UNSYNCHRONIZED,
&vb_transfer[i]);
draw_set_mapped_vertex_buffer(r300->draw, i, buf);
}
if (indexed) {
indices = pipe_buffer_map(pipe, r300->index_buffer.buffer,
- PIPE_TRANSFER_READ, &ib_transfer);
+ PIPE_TRANSFER_READ |
+ PIPE_TRANSFER_UNSYNCHRONIZED, &ib_transfer);
}
draw_set_mapped_index_buffer(r300->draw, indices);
draw_flush(r300->draw);
r300->draw_vbo_locked = FALSE;
- for (i = 0; i < r300->vertex_buffer_count; i++) {
+ for (i = 0; i < r300->nr_vertex_buffers; i++) {
if (r300->vertex_buffer[i].buffer) {
pipe_buffer_unmap(pipe, vb_transfer[i]);
draw_set_mapped_vertex_buffer(r300->draw, i, NULL);
pipe_resource_reference(&r300->vbo, NULL);
r300->vbo = pipe_buffer_create(screen,
PIPE_BIND_VERTEX_BUFFER,
+ PIPE_USAGE_STREAM,
R300_MAX_DRAW_VBO_SIZE);
r300->draw_vbo_offset = 0;
r300->draw_vbo_size = R300_MAX_DRAW_VBO_SIZE;
- r300->validate_buffers = TRUE;
}
r300render->vertex_size = vertex_size;
r300render->vbo_ptr = pipe_buffer_map(&r300render->r300->context,
r300->vbo,
- PIPE_TRANSFER_WRITE,
+ PIPE_TRANSFER_WRITE |
+ PIPE_TRANSFER_UNSYNCHRONIZED,
&r300render->vbo_transfer);
assert(r300render->vbo_ptr);
r300render->vbo_max_used = 0;
}
-static boolean r300_render_set_primitive(struct vbuf_render* render,
- unsigned prim)
+static void r300_render_set_primitive(struct vbuf_render* render,
+ unsigned prim)
{
struct r300_render* r300render = r300_render(render);
r300render->prim = prim;
r300render->hwprim = r300_translate_primitive(prim);
-
- return TRUE;
}
static void r300_render_draw_arrays(struct vbuf_render* render,
if (r300->draw_first_emitted) {
if (!r300_prepare_for_rendering(r300,
- PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL,
- NULL, 6, 0, 0))
+ PREP_EMIT_STATES | PREP_EMIT_VARRAYS_SWTCL,
+ NULL, dwords, 0, 0, -1))
return;
} else {
if (!r300_emit_states(r300,
- PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL,
- NULL, 0, 0))
+ PREP_EMIT_STATES | PREP_EMIT_VARRAYS_SWTCL,
+ NULL, 0, 0, -1))
return;
}
- /* Uncomment to dump all VBOs rendered through this interface.
- * Slow and noisy!
- ptr = pipe_buffer_map(&r300render->r300->context,
- r300render->vbo, PIPE_TRANSFER_READ,
- &r300render->vbo_transfer);
-
- for (i = 0; i < count; i++) {
- printf("r300: Vertex %d\n", i);
- draw_dump_emitted_vertex(&r300->vertex_info, ptr);
- ptr += r300->vertex_info.size * 4;
- printf("\n");
- }
-
- pipe_buffer_unmap(&r300render->r300->context, r300render->vbo,
- r300render->vbo_transfer);
- */
-
BEGIN_CS(dwords);
OUT_CS_REG(R300_GA_COLOR_CONTROL,
r300_provoking_vertex_fixes(r300, r300render->prim));
if (r300->draw_first_emitted) {
if (!r300_prepare_for_rendering(r300,
- PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL | PREP_INDEXED,
- NULL, 256, 0, 0))
+ PREP_EMIT_STATES | PREP_EMIT_VARRAYS_SWTCL | PREP_INDEXED,
+ NULL, 256, 0, 0, -1))
return;
} else {
if (!r300_emit_states(r300,
- PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL | PREP_INDEXED,
- NULL, 0, 0))
+ PREP_EMIT_STATES | PREP_EMIT_VARRAYS_SWTCL | PREP_INDEXED,
+ NULL, 0, 0, -1))
return;
}
end_cs_dwords = r300_get_num_cs_end_dwords(r300);
while (count) {
- free_dwords = R300_MAX_CMDBUF_DWORDS - r300->cs->cdw;
+ free_dwords = RADEON_MAX_CMDBUF_DWORDS - r300->cs->cdw;
short_count = MIN2(count, (free_dwords - end_cs_dwords - 6) * 2);
if (count) {
if (!r300_prepare_for_rendering(r300,
- PREP_EMIT_AOS_SWTCL | PREP_INDEXED,
- NULL, 256, 0, 0))
+ PREP_EMIT_VARRAYS_SWTCL | PREP_INDEXED,
+ NULL, 256, 0, 0, -1))
return;
end_cs_dwords = r300_get_num_cs_end_dwords(r300);
* If we rendered a quad, the pixels on the main diagonal
* would be computed and stored twice, which makes the clear/copy codepaths
* somewhat inefficient. Instead we use a rectangular point sprite. */
-static void r300_blitter_draw_rectangle(struct blitter_context *blitter,
- unsigned x1, unsigned y1,
- unsigned x2, unsigned y2,
- float depth,
- enum blitter_attrib_type type,
- const float attrib[4])
+void r300_blitter_draw_rectangle(struct blitter_context *blitter,
+ unsigned x1, unsigned y1,
+ unsigned x2, unsigned y2,
+ float depth,
+ enum blitter_attrib_type type,
+ const union pipe_color_union *attrib)
{
struct r300_context *r300 = r300_context(util_blitter_get_pipe(blitter));
unsigned last_sprite_coord_enable = r300->sprite_coord_enable;
type == UTIL_BLITTER_ATTRIB_COLOR || !r300->draw ? 8 : 4;
unsigned dwords = 13 + vertex_size +
(type == UTIL_BLITTER_ATTRIB_TEXCOORD ? 7 : 0);
- const float zeros[4] = {0, 0, 0, 0};
+ static const union pipe_color_union zeros;
CS_LOCALS(r300);
+ if (r300->skip_rendering)
+ return;
+
r300->context.set_vertex_buffers(&r300->context, 0, NULL);
if (type == UTIL_BLITTER_ATTRIB_TEXCOORD)
r300_update_derived_state(r300);
/* Mark some states we don't care about as non-dirty. */
- r300->clip_state.dirty = FALSE;
r300->viewport_state.dirty = FALSE;
- if (!r300_prepare_for_rendering(r300, PREP_FIRST_DRAW, NULL, dwords, 0, 0))
+ if (!r300_prepare_for_rendering(r300, PREP_EMIT_STATES, NULL, dwords, 0, 0, -1))
goto done;
DBG(r300, DBG_DRAW, "r300: draw_rectangle\n");
OUT_CS_REG(R300_GB_ENABLE, R300_GB_POINT_STUFF_ENABLE |
(R300_GB_TEX_STR << R300_GB_TEX0_SOURCE_SHIFT));
OUT_CS_REG_SEQ(R300_GA_POINT_S0, 4);
- OUT_CS_32F(attrib[0]);
- OUT_CS_32F(attrib[3]);
- OUT_CS_32F(attrib[2]);
- OUT_CS_32F(attrib[1]);
+ OUT_CS_32F(attrib->f[0]);
+ OUT_CS_32F(attrib->f[3]);
+ OUT_CS_32F(attrib->f[2]);
+ OUT_CS_32F(attrib->f[1]);
}
/* Set up VAP controls. */
if (vertex_size == 8) {
if (!attrib)
- attrib = zeros;
- OUT_CS_TABLE(attrib, 4);
+ attrib = &zeros;
+ OUT_CS_TABLE(attrib->f, 4);
}
END_CS;
done:
/* Restore the state. */
- r300_mark_atom_dirty(r300, &r300->clip_state);
r300_mark_atom_dirty(r300, &r300->rs_state);
r300_mark_atom_dirty(r300, &r300->viewport_state);
r300->sprite_coord_enable = last_sprite_coord_enable;
}
-static void r300_resource_resolve(struct pipe_context* pipe,
- struct pipe_resource* dest,
- unsigned dst_layer,
- struct pipe_resource* src,
- unsigned src_layer)
+static void r300_resource_resolve(struct pipe_context *pipe,
+ const struct pipe_resolve_info *info)
{
- struct r300_context* r300 = r300_context(pipe);
- struct pipe_surface* srcsurf, surf_tmpl;
+ struct r300_context *r300 = r300_context(pipe);
+ struct pipe_surface *srcsurf, *dstsurf, surf_tmpl;
struct r300_aa_state *aa = (struct r300_aa_state*)r300->aa_state.state;
- float color[] = {0, 0, 0, 0};
+ static const union pipe_color_union color;
+
+ assert(0 && "Resource resolve is unsupported, invalid call.");
memset(&surf_tmpl, 0, sizeof(surf_tmpl));
- surf_tmpl.format = src->format;
- surf_tmpl.usage = 0; /* not really a surface hence no bind flags */
- surf_tmpl.u.tex.level = 0; /* msaa resources cannot have mipmaps */
- surf_tmpl.u.tex.first_layer = src_layer;
- surf_tmpl.u.tex.last_layer = src_layer;
- srcsurf = pipe->create_surface(pipe, src, &surf_tmpl);
- surf_tmpl.format = dest->format;
- surf_tmpl.u.tex.first_layer = dst_layer;
- surf_tmpl.u.tex.last_layer = dst_layer;
+ surf_tmpl.format = info->src.res->format;
+ surf_tmpl.u.tex.first_layer =
+ surf_tmpl.u.tex.last_layer = info->src.layer;
+ srcsurf = pipe->create_surface(pipe, info->src.res, &surf_tmpl);
+ /* XXX Offset both surfaces by x0,y1. */
+
+ surf_tmpl.format = info->dst.res->format;
+ surf_tmpl.u.tex.level = info->dst.level;
+ surf_tmpl.u.tex.first_layer =
+ surf_tmpl.u.tex.last_layer = info->dst.layer;
+ dstsurf = pipe->create_surface(pipe, info->dst.res, &surf_tmpl);
DBG(r300, DBG_DRAW, "r300: Resolving resource...\n");
/* Enable AA resolve. */
- aa->dest = r300_surface(pipe->create_surface(pipe, dest, &surf_tmpl));
-
+ aa->dest = r300_surface(dstsurf);
aa->aaresolve_ctl =
R300_RB3D_AARESOLVE_CTL_AARESOLVE_MODE_RESOLVE |
R300_RB3D_AARESOLVE_CTL_AARESOLVE_ALPHA_AVERAGE;
- r300->aa_state.size = 12;
+ r300->aa_state.size = 10;
r300_mark_atom_dirty(r300, &r300->aa_state);
/* Resolve the surface. */
+ /* XXX: y1 < 0 ==> Y flip */
r300->context.clear_render_target(pipe,
- srcsurf, color, 0, 0, src->width0, src->height0);
+ srcsurf, &color, 0, 0,
+ info->dst.x1 - info->dst.x0,
+ info->dst.y1 - info->dst.y0);
/* Disable AA resolve. */
+ aa->dest = NULL;
aa->aaresolve_ctl = 0;
r300->aa_state.size = 4;
r300_mark_atom_dirty(r300, &r300->aa_state);
- pipe_surface_reference((struct pipe_surface**)&srcsurf, NULL);
- pipe_surface_reference((struct pipe_surface**)&aa->dest, NULL);
+ pipe_surface_reference(&srcsurf, NULL);
+ pipe_surface_reference(&dstsurf, NULL);
}
void r300_init_render_functions(struct r300_context *r300)
}
r300->context.resource_resolve = r300_resource_resolve;
- r300->blitter->draw_rectangle = r300_blitter_draw_rectangle;
/* Plug in the two-sided stencil reference value fallback if needed. */
if (!r300->screen->caps.is_r500)