| /********************************************************** |
| * Copyright 2008-2009 VMware, Inc. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person |
| * obtaining a copy of this software and associated documentation |
| * files (the "Software"), to deal in the Software without |
| * restriction, including without limitation the rights to use, copy, |
| * modify, merge, publish, distribute, sublicense, and/or sell copies |
| * of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| **********************************************************/ |
| |
| #include "util/u_inlines.h" |
| #include "util/u_memory.h" |
| #include "pipe/p_defines.h" |
| |
| #include "svga_screen.h" |
| #include "svga_context.h" |
| #include "svga_state.h" |
| #include "svga_cmd.h" |
| #include "svga_tgsi.h" |
| #include "svga_debug.h" |
| #include "svga_resource_buffer.h" |
| |
| #include "svga_hw_reg.h" |
| |
| |
| /* |
| * Don't try to send more than 4kb of successive constants. |
| */ |
| #define MAX_CONST_REG_COUNT 256 /**< number of float[4] constants */ |
| |
| /** |
| * Extra space for svga-specific VS/PS constants (such as texcoord |
| * scale factors, vertex transformation scale/translation). |
| */ |
| #define MAX_EXTRA_CONSTS 32 |
| |
| /** Guest-backed surface constant buffers must be this size */ |
| #define GB_CONSTBUF_SIZE (SVGA3D_CONSTREG_MAX) |
| |
| /** |
| * Convert from PIPE_SHADER_* to SVGA3D_SHADERTYPE_* |
| */ |
| static unsigned |
| svga_shader_type(unsigned shader) |
| { |
| switch (shader) { |
| case PIPE_SHADER_VERTEX: |
| return SVGA3D_SHADERTYPE_VS; |
| case PIPE_SHADER_FRAGMENT: |
| return SVGA3D_SHADERTYPE_PS; |
| default: |
| assert(!"Unexpected shader type"); |
| return SVGA3D_SHADERTYPE_VS; |
| } |
| } |
| |
| |
| /** |
| * Emit any extra fragment shader constants into the buffer pointed |
| * to by 'dest'. |
| * In particular, these would be the scaling factors needed for handling |
| * unnormalized texture coordinates for texture rectangles. |
| * \return number of float[4] constants put into the dest buffer |
| */ |
| static unsigned |
| svga_get_extra_fs_constants(struct svga_context *svga, float *dest) |
| { |
| const struct svga_shader_variant *variant = svga->state.hw_draw.fs; |
| const struct svga_fs_compile_key *key = &variant->key.fkey; |
| unsigned count = 0; |
| |
| /* SVGA_NEW_VS_VARIANT |
| */ |
| if (key->num_unnormalized_coords) { |
| unsigned i; |
| |
| for (i = 0; i < key->num_textures; i++) { |
| if (key->tex[i].unnormalized) { |
| struct pipe_resource *tex = svga->curr.sampler_views[i]->texture; |
| |
| /* debug/sanity check */ |
| assert(key->tex[i].width_height_idx == count); |
| |
| *dest++ = 1.0 / (float)tex->width0; |
| *dest++ = 1.0 / (float)tex->height0; |
| *dest++ = 1.0; |
| *dest++ = 1.0; |
| |
| count++; |
| } |
| } |
| } |
| |
| assert(count <= MAX_EXTRA_CONSTS); |
| |
| return count; |
| } |
| |
| |
| /** |
| * Emit any extra vertex shader constants into the buffer pointed |
| * to by 'dest'. |
| * In particular, these would be the scale and bias factors computed |
| * from the framebuffer size which are used to copy with differences in |
| * GL vs D3D coordinate spaces. See svga_tgsi_insn.c for more info. |
| * \return number of float[4] constants put into the dest buffer |
| */ |
| static unsigned |
| svga_get_extra_vs_constants(struct svga_context *svga, float *dest) |
| { |
| const struct svga_shader_variant *variant = svga->state.hw_draw.vs; |
| const struct svga_vs_compile_key *key = &variant->key.vkey; |
| unsigned count = 0; |
| |
| /* SVGA_NEW_VS_VARIANT |
| */ |
| if (key->need_prescale) { |
| memcpy(dest, svga->state.hw_clear.prescale.scale, 4 * sizeof(float)); |
| dest += 4; |
| |
| memcpy(dest, svga->state.hw_clear.prescale.translate, 4 * sizeof(float)); |
| dest += 4; |
| |
| count = 2; |
| } |
| |
| assert(count <= MAX_EXTRA_CONSTS); |
| |
| return count; |
| } |
| |
| |
| /** |
| * Check and emit one shader constant register. |
| * \param shader PIPE_SHADER_FRAGMENT or PIPE_SHADER_VERTEX |
| * \param i which float[4] constant to change |
| * \param value the new float[4] value |
| */ |
| static enum pipe_error |
| emit_const(struct svga_context *svga, unsigned shader, unsigned i, |
| const float *value) |
| { |
| enum pipe_error ret = PIPE_OK; |
| |
| assert(shader < PIPE_SHADER_TYPES); |
| assert(i < SVGA3D_CONSTREG_MAX); |
| |
| if (memcmp(svga->state.hw_draw.cb[shader][i], value, |
| 4 * sizeof(float)) != 0) { |
| if (SVGA_DEBUG & DEBUG_CONSTS) |
| debug_printf("%s %s %u: %f %f %f %f\n", |
| __FUNCTION__, |
| shader == PIPE_SHADER_VERTEX ? "VERT" : "FRAG", |
| i, |
| value[0], |
| value[1], |
| value[2], |
| value[3]); |
| |
| ret = SVGA3D_SetShaderConst( svga->swc, |
| i, |
| svga_shader_type(shader), |
| SVGA3D_CONST_TYPE_FLOAT, |
| value ); |
| if (ret != PIPE_OK) |
| return ret; |
| |
| memcpy(svga->state.hw_draw.cb[shader][i], value, 4 * sizeof(float)); |
| } |
| |
| return ret; |
| } |
| |
| |
| /* |
| * Check and emit a range of shader constant registers, trying to coalesce |
| * successive shader constant updates in a single command in order to save |
| * space on the command buffer. This is a HWv8 feature. |
| */ |
| static enum pipe_error |
| emit_const_range(struct svga_context *svga, |
| unsigned shader, |
| unsigned offset, |
| unsigned count, |
| const float (*values)[4]) |
| { |
| unsigned i, j; |
| enum pipe_error ret; |
| |
| #ifdef DEBUG |
| if (offset + count > SVGA3D_CONSTREG_MAX) { |
| debug_printf("svga: too many constants (offset %u + count %u = %u (max = %u))\n", |
| offset, count, offset + count, SVGA3D_CONSTREG_MAX); |
| } |
| #endif |
| |
| if (offset > SVGA3D_CONSTREG_MAX) { |
| /* This isn't OK, but if we propagate an error all the way up we'll |
| * just get into more trouble. |
| * XXX note that offset is always zero at this time so this is moot. |
| */ |
| return PIPE_OK; |
| } |
| |
| if (offset + count > SVGA3D_CONSTREG_MAX) { |
| /* Just drop the extra constants for now. |
| * Ideally we should not have allowed the app to create a shader |
| * that exceeds our constant buffer size but there's no way to |
| * express that in gallium at this time. |
| */ |
| count = SVGA3D_CONSTREG_MAX - offset; |
| } |
| |
| i = 0; |
| while (i < count) { |
| if (memcmp(svga->state.hw_draw.cb[shader][offset + i], |
| values[i], |
| 4 * sizeof(float)) != 0) { |
| /* Found one dirty constant |
| */ |
| if (SVGA_DEBUG & DEBUG_CONSTS) |
| debug_printf("%s %s %d: %f %f %f %f\n", |
| __FUNCTION__, |
| shader == PIPE_SHADER_VERTEX ? "VERT" : "FRAG", |
| offset + i, |
| values[i][0], |
| values[i][1], |
| values[i][2], |
| values[i][3]); |
| |
| /* Look for more consecutive dirty constants. |
| */ |
| j = i + 1; |
| while (j < count && |
| j < i + MAX_CONST_REG_COUNT && |
| memcmp(svga->state.hw_draw.cb[shader][offset + j], |
| values[j], |
| 4 * sizeof(float)) != 0) { |
| |
| if (SVGA_DEBUG & DEBUG_CONSTS) |
| debug_printf("%s %s %d: %f %f %f %f\n", |
| __FUNCTION__, |
| shader == PIPE_SHADER_VERTEX ? "VERT" : "FRAG", |
| offset + j, |
| values[j][0], |
| values[j][1], |
| values[j][2], |
| values[j][3]); |
| |
| ++j; |
| } |
| |
| assert(j >= i + 1); |
| |
| /* Send them all together. |
| */ |
| if (svga_have_gb_objects(svga)) { |
| ret = SVGA3D_SetGBShaderConstsInline(svga->swc, |
| offset + i, /* start */ |
| j - i, /* count */ |
| svga_shader_type(shader), |
| SVGA3D_CONST_TYPE_FLOAT, |
| values + i); |
| } |
| else { |
| ret = SVGA3D_SetShaderConsts(svga->swc, |
| offset + i, j - i, |
| svga_shader_type(shader), |
| SVGA3D_CONST_TYPE_FLOAT, |
| values + i); |
| } |
| if (ret != PIPE_OK) { |
| return ret; |
| } |
| |
| /* |
| * Local copy of the hardware state. |
| */ |
| memcpy(svga->state.hw_draw.cb[shader][offset + i], |
| values[i], |
| (j - i) * 4 * sizeof(float)); |
| |
| i = j + 1; |
| } else { |
| ++i; |
| } |
| } |
| |
| return PIPE_OK; |
| } |
| |
| |
| /** |
| * Emit all the constants in a constant buffer for a shader stage. |
| */ |
| static enum pipe_error |
| emit_consts(struct svga_context *svga, unsigned shader) |
| { |
| struct svga_screen *ss = svga_screen(svga->pipe.screen); |
| struct pipe_transfer *transfer = NULL; |
| unsigned count; |
| const float (*data)[4] = NULL; |
| unsigned i; |
| enum pipe_error ret = PIPE_OK; |
| const unsigned offset = 0; |
| |
| assert(shader < PIPE_SHADER_TYPES); |
| |
| if (svga->curr.cbufs[shader].buffer == NULL) |
| goto done; |
| |
| data = (const float (*)[4])pipe_buffer_map(&svga->pipe, |
| svga->curr.cbufs[shader].buffer, |
| PIPE_TRANSFER_READ, |
| &transfer); |
| if (data == NULL) { |
| ret = PIPE_ERROR_OUT_OF_MEMORY; |
| goto done; |
| } |
| |
| /* sanity check */ |
| assert(svga->curr.cbufs[shader].buffer->width0 >= |
| svga->curr.cbufs[shader].buffer_size); |
| |
| /* Use/apply the constant buffer size and offsets here */ |
| count = svga->curr.cbufs[shader].buffer_size / (4 * sizeof(float)); |
| data += svga->curr.cbufs[shader].buffer_offset / (4 * sizeof(float)); |
| |
| if (ss->hw_version >= SVGA3D_HWVERSION_WS8_B1) { |
| ret = emit_const_range( svga, shader, offset, count, data ); |
| if (ret != PIPE_OK) { |
| goto done; |
| } |
| } else { |
| for (i = 0; i < count; i++) { |
| ret = emit_const( svga, shader, offset + i, data[i] ); |
| if (ret != PIPE_OK) { |
| goto done; |
| } |
| } |
| } |
| |
| done: |
| if (data) |
| pipe_buffer_unmap(&svga->pipe, transfer); |
| |
| return ret; |
| } |
| |
| |
| static enum pipe_error |
| emit_fs_consts(struct svga_context *svga, unsigned dirty) |
| { |
| struct svga_screen *ss = svga_screen(svga->pipe.screen); |
| const struct svga_shader_variant *variant = svga->state.hw_draw.fs; |
| enum pipe_error ret = PIPE_OK; |
| |
| /* SVGA_NEW_FS_VARIANT |
| */ |
| if (variant == NULL) |
| return PIPE_OK; |
| |
| /* SVGA_NEW_FS_CONST_BUFFER |
| */ |
| ret = emit_consts( svga, PIPE_SHADER_FRAGMENT ); |
| if (ret != PIPE_OK) |
| return ret; |
| |
| /* emit extra shader constants */ |
| { |
| unsigned offset = variant->shader->info.file_max[TGSI_FILE_CONSTANT] + 1; |
| float extras[MAX_EXTRA_CONSTS][4]; |
| unsigned count, i; |
| |
| count = svga_get_extra_fs_constants(svga, (float *) extras); |
| |
| if (ss->hw_version >= SVGA3D_HWVERSION_WS8_B1) { |
| ret = emit_const_range(svga, PIPE_SHADER_FRAGMENT, offset, count, |
| (const float (*) [4])extras); |
| } else { |
| for (i = 0; i < count; i++) { |
| ret = emit_const(svga, PIPE_SHADER_FRAGMENT, offset + i, extras[i]); |
| if (ret != PIPE_OK) |
| return ret; |
| } |
| } |
| } |
| |
| return ret; |
| } |
| |
| |
| struct svga_tracked_state svga_hw_fs_constants = |
| { |
| "hw fs params", |
| (SVGA_NEW_FS_CONST_BUFFER | |
| SVGA_NEW_FS_VARIANT | |
| SVGA_NEW_TEXTURE_BINDING), |
| emit_fs_consts |
| }; |
| |
| |
| |
| static enum pipe_error |
| emit_vs_consts(struct svga_context *svga, unsigned dirty) |
| { |
| struct svga_screen *ss = svga_screen(svga->pipe.screen); |
| const struct svga_shader_variant *variant = svga->state.hw_draw.vs; |
| enum pipe_error ret = PIPE_OK; |
| |
| /* SVGA_NEW_VS_VARIANT |
| */ |
| if (variant == NULL) |
| return PIPE_OK; |
| |
| /* SVGA_NEW_VS_CONST_BUFFER |
| */ |
| ret = emit_consts( svga, PIPE_SHADER_VERTEX ); |
| if (ret != PIPE_OK) |
| return ret; |
| |
| /* emit extra shader constants */ |
| { |
| unsigned offset = variant->shader->info.file_max[TGSI_FILE_CONSTANT] + 1; |
| float extras[MAX_EXTRA_CONSTS][4]; |
| unsigned count, i; |
| |
| count = svga_get_extra_vs_constants(svga, (float *) extras); |
| assert(count <= Elements(extras)); |
| |
| if (ss->hw_version >= SVGA3D_HWVERSION_WS8_B1) { |
| ret = emit_const_range(svga, PIPE_SHADER_VERTEX, offset, count, |
| (const float (*) [4]) extras); |
| } else { |
| for (i = 0; i < count; i++) { |
| ret = emit_const(svga, PIPE_SHADER_VERTEX, offset + i, extras[i]); |
| if (ret != PIPE_OK) |
| return ret; |
| } |
| } |
| } |
| |
| return ret; |
| } |
| |
| |
| struct svga_tracked_state svga_hw_vs_constants = |
| { |
| "hw vs params", |
| (SVGA_NEW_PRESCALE | |
| SVGA_NEW_VS_CONST_BUFFER | |
| SVGA_NEW_VS_VARIANT), |
| emit_vs_consts |
| }; |