diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/drivers/r300/r300_render.c | 79 |
1 files changed, 53 insertions, 26 deletions
diff --git a/src/gallium/drivers/r300/r300_render.c b/src/gallium/drivers/r300/r300_render.c index f58d511e11b..3f514f4d1b7 100644 --- a/src/gallium/drivers/r300/r300_render.c +++ b/src/gallium/drivers/r300/r300_render.c @@ -467,10 +467,10 @@ static void r300_emit_draw_elements(struct r300_context *r300, unsigned maxIndex, unsigned mode, unsigned start, - unsigned count) + unsigned count, + uint16_t *imm_indices3) { - uint32_t count_dwords; - uint32_t offset_dwords = indexSize * start / sizeof(uint32_t); + uint32_t count_dwords, offset_dwords; boolean alt_num_verts = count > 65535; CS_LOCALS(r300); @@ -485,15 +485,39 @@ static void r300_emit_draw_elements(struct r300_context *r300, DBG(r300, DBG_DRAW, "r300: Indexbuf of %u indices, min %u max %u\n", count, minIndex, maxIndex); - BEGIN_CS(13 + (alt_num_verts ? 2 : 0)); - if (alt_num_verts) { - OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count); - } + 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; + + /* If start is odd, render the first triangle with indices embedded + * in the command stream. This will increase start by 3 and make it + * even. We can then proceed without a fallback. */ + if (indexSize == 2 && (start & 1) && + mode == PIPE_PRIM_TRIANGLES) { + BEGIN_CS(4); + OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, 2); + OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (3 << 16) | + R300_VAP_VF_CNTL__PRIM_TRIANGLES); + OUT_CS(imm_indices3[1] << 16 | imm_indices3[0]); + OUT_CS(imm_indices3[2]); + END_CS; + + start += 3; + count -= 3; + if (!count) + return; + } + + offset_dwords = indexSize * start / sizeof(uint32_t); + + BEGIN_CS(8 + (alt_num_verts ? 2 : 0)); + if (alt_num_verts) { + OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count); + } OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, 0); if (indexSize == 4) { count_dwords = count; @@ -541,7 +565,7 @@ static void r300_draw_range_elements(struct pipe_context* pipe, r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0); unsigned short_count; int buffer_offset = 0, index_offset = 0; /* for index bias emulation */ - unsigned new_offset; + uint16_t indices3[3]; if (indexBias && !r300->screen->caps.index_bias_supported) { r300_split_index_bias(r300, indexBias, &buffer_offset, &index_offset); @@ -553,43 +577,46 @@ static void r300_draw_range_elements(struct pipe_context* pipe, r300_update_derived_state(r300); /* Fallback for misaligned ushort indices. */ - if (indexSize == 2 && start % 2 == 1) { + if (indexSize == 2 && (start & 1)) { struct pipe_transfer *transfer; struct pipe_resource *userbuf; + uint16_t *ptr = pipe_buffer_map(pipe, indexBuffer, PIPE_TRANSFER_READ, &transfer); - /* 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, &new_offset); - pipe_resource_reference(&userbuf, NULL); + if (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); + } pipe_buffer_unmap(pipe, transfer); } else { - r300_upload_index_buffer(r300, &indexBuffer, indexSize, start, count, &new_offset); + r300_upload_index_buffer(r300, &indexBuffer, indexSize, start, count, &start); } - start = new_offset; - - /* 15 dwords for emit_draw_elements. Give up if the function fails. */ + /* 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, 15, buffer_offset, indexBias)) + PREP_INDEXED, indexBuffer, 19, buffer_offset, indexBias)) goto done; if (alt_num_verts || count <= 65535) { r300_emit_draw_elements(r300, indexBuffer, indexSize, - minIndex, maxIndex, mode, start, count); + minIndex, maxIndex, mode, start, count, indices3); } else { do { short_count = MIN2(count, 65534); r300_emit_draw_elements(r300, indexBuffer, indexSize, minIndex, maxIndex, - mode, start, short_count); + mode, start, short_count, indices3); start += short_count; count -= short_count; @@ -598,7 +625,7 @@ static void r300_draw_range_elements(struct pipe_context* pipe, if (count) { if (!r300_prepare_for_rendering(r300, PREP_VALIDATE_VBOS | PREP_EMIT_AOS | PREP_INDEXED, - indexBuffer, 15, buffer_offset, indexBias)) + indexBuffer, 19, buffer_offset, indexBias)) goto done; } } while (count); |