diff options
Diffstat (limited to 'src/gallium/state_trackers/vega/api_filters.c')
| -rw-r--r-- | src/gallium/state_trackers/vega/api_filters.c | 805 |
1 files changed, 805 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/vega/api_filters.c b/src/gallium/state_trackers/vega/api_filters.c new file mode 100644 index 00000000000..862cbb03c43 --- /dev/null +++ b/src/gallium/state_trackers/vega/api_filters.c @@ -0,0 +1,805 @@ +/************************************************************************** + * + * Copyright 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, sub license, 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 (including the + * next paragraph) 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 NON-INFRINGEMENT. + * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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 "VG/openvg.h" + +#include "vg_context.h" +#include "image.h" +#include "renderer.h" +#include "shaders_cache.h" +#include "st_inlines.h" + +#include "pipe/p_context.h" +#include "pipe/p_state.h" +#include "pipe/p_inlines.h" +#include "pipe/p_screen.h" +#include "pipe/p_shader_tokens.h" + +#include "util/u_memory.h" + + +#include "asm_filters.h" + + +struct filter_info { + struct vg_image *dst; + struct vg_image *src; + struct vg_shader * (*setup_shader)(struct vg_context *, void *); + void *user_data; + const void *const_buffer; + VGint const_buffer_len; + VGTilingMode tiling_mode; + struct pipe_texture *extra_texture; +}; + +static INLINE struct pipe_texture *create_texture_1d(struct vg_context *ctx, + const VGuint *color_data, + const VGint color_data_len) +{ + struct pipe_context *pipe = ctx->pipe; + struct pipe_screen *screen = pipe->screen; + struct pipe_texture *tex = 0; + struct pipe_texture templ; + + memset(&templ, 0, sizeof(templ)); + templ.target = PIPE_TEXTURE_1D; + templ.format = PIPE_FORMAT_A8R8G8B8_UNORM; + templ.last_level = 0; + templ.width[0] = color_data_len; + templ.height[0] = 1; + templ.depth[0] = 1; + pf_get_block(PIPE_FORMAT_A8R8G8B8_UNORM, &templ.block); + templ.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER; + + tex = screen->texture_create(screen, &templ); + + { /* upload color_data */ + struct pipe_transfer *transfer = + screen->get_tex_transfer(screen, tex, + 0, 0, 0, + PIPE_TRANSFER_READ_WRITE , + 0, 0, tex->width[0], tex->height[0]); + void *map = screen->transfer_map(screen, transfer); + memcpy(map, color_data, sizeof(VGint)*color_data_len); + screen->transfer_unmap(screen, transfer); + screen->tex_transfer_destroy(transfer); + } + + return tex; +} + +static INLINE struct pipe_surface * setup_framebuffer(struct vg_image *dst) +{ + struct vg_context *ctx = vg_current_context(); + struct pipe_context *pipe = ctx->pipe; + struct pipe_framebuffer_state fb; + struct pipe_surface *dst_surf = pipe->screen->get_tex_surface( + pipe->screen, dst->texture, 0, 0, 0, + PIPE_BUFFER_USAGE_GPU_WRITE); + + /* drawing dest */ + memset(&fb, 0, sizeof(fb)); + fb.width = dst->x + dst_surf->width; + fb.height = dst->y + dst_surf->height; + fb.nr_cbufs = 1; + fb.cbufs[0] = dst_surf; + { + VGint i; + for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i) + fb.cbufs[i] = 0; + } + cso_set_framebuffer(ctx->cso_context, &fb); + + return dst_surf; +} + +static void setup_viewport(struct vg_image *dst) +{ + struct vg_context *ctx = vg_current_context(); + vg_set_viewport(ctx, VEGA_Y0_TOP); +} + +static void setup_blend() +{ + struct vg_context *ctx = vg_current_context(); + struct pipe_blend_state blend; + memset(&blend, 0, sizeof(blend)); + blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE; + blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE; + blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO; + blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO; + if (ctx->state.vg.filter_channel_mask & VG_RED) + blend.colormask |= PIPE_MASK_R; + if (ctx->state.vg.filter_channel_mask & VG_GREEN) + blend.colormask |= PIPE_MASK_G; + if (ctx->state.vg.filter_channel_mask & VG_BLUE) + blend.colormask |= PIPE_MASK_B; + if (ctx->state.vg.filter_channel_mask & VG_ALPHA) + blend.colormask |= PIPE_MASK_A; + blend.blend_enable = 1; + cso_set_blend(ctx->cso_context, &blend); +} + +static void setup_constant_buffer(struct vg_context *ctx, const void *buffer, + VGint param_bytes) +{ + struct pipe_context *pipe = ctx->pipe; + struct pipe_constant_buffer *cbuf = &ctx->filter.buffer; + + /* We always need to get a new buffer, to keep the drivers simple and + * avoid gratuitous rendering synchronization. */ + pipe_buffer_reference(&cbuf->buffer, NULL); + + cbuf->buffer = pipe_buffer_create(pipe->screen, 16, + PIPE_BUFFER_USAGE_CONSTANT, + param_bytes); + + if (cbuf->buffer) { + st_no_flush_pipe_buffer_write(ctx, cbuf->buffer, + 0, param_bytes, buffer); + } + + ctx->pipe->set_constant_buffer(ctx->pipe, PIPE_SHADER_FRAGMENT, 0, cbuf); +} + +static void setup_samplers(struct vg_context *ctx, struct filter_info *info) +{ + struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS]; + struct pipe_texture *textures[PIPE_MAX_SAMPLERS]; + struct pipe_sampler_state sampler[3]; + int num_samplers = 0; + int num_textures = 0; + + samplers[0] = NULL; + samplers[1] = NULL; + samplers[2] = NULL; + samplers[3] = NULL; + textures[0] = NULL; + textures[1] = NULL; + textures[2] = NULL; + textures[3] = NULL; + + memset(&sampler[0], 0, sizeof(struct pipe_sampler_state)); + sampler[0].wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + sampler[0].wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + sampler[0].wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + sampler[0].min_img_filter = PIPE_TEX_MIPFILTER_LINEAR; + sampler[0].mag_img_filter = PIPE_TEX_MIPFILTER_LINEAR; + sampler[0].normalized_coords = 1; + + switch(info->tiling_mode) { + case VG_TILE_FILL: + sampler[0].wrap_s = PIPE_TEX_WRAP_CLAMP_TO_BORDER; + sampler[0].wrap_t = PIPE_TEX_WRAP_CLAMP_TO_BORDER; + memcpy(sampler[0].border_color, + ctx->state.vg.tile_fill_color, + sizeof(VGfloat) * 4); + break; + case VG_TILE_PAD: + sampler[0].wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + sampler[0].wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; + break; + case VG_TILE_REPEAT: + sampler[0].wrap_s = PIPE_TEX_WRAP_REPEAT; + sampler[0].wrap_t = PIPE_TEX_WRAP_REPEAT; + break; + case VG_TILE_REFLECT: + sampler[0].wrap_s = PIPE_TEX_WRAP_MIRROR_REPEAT; + sampler[0].wrap_t = PIPE_TEX_WRAP_MIRROR_REPEAT; + break; + default: + debug_assert(!"Unknown tiling mode"); + } + + samplers[0] = &sampler[0]; + textures[0] = info->src->texture; + ++num_samplers; + ++num_textures; + + if (info->extra_texture) { + memcpy(&sampler[1], &sampler[0], sizeof(struct pipe_sampler_state)); + samplers[1] = &sampler[1]; + textures[1] = info->extra_texture; + ++num_samplers; + ++num_textures; + } + + + cso_set_samplers(ctx->cso_context, num_samplers, (const struct pipe_sampler_state **)samplers); + cso_set_sampler_textures(ctx->cso_context, num_textures, textures); +} + +static struct vg_shader * setup_color_matrix(struct vg_context *ctx, void *user_data) +{ + struct vg_shader *shader = + shader_create_from_text(ctx->pipe, color_matrix_asm, 200, + PIPE_SHADER_FRAGMENT); + cso_set_fragment_shader_handle(ctx->cso_context, shader->driver); + return shader; +} + +static struct vg_shader * setup_convolution(struct vg_context *ctx, void *user_data) +{ + char buffer[1024]; + VGint num_consts = (VGint)(long)(user_data); + struct vg_shader *shader; + + snprintf(buffer, 1023, convolution_asm, num_consts, num_consts / 2 + 1); + + shader = shader_create_from_text(ctx->pipe, buffer, 200, + PIPE_SHADER_FRAGMENT); + + cso_set_fragment_shader_handle(ctx->cso_context, shader->driver); + return shader; +} + +static struct vg_shader * setup_lookup(struct vg_context *ctx, void *user_data) +{ + struct vg_shader *shader = + shader_create_from_text(ctx->pipe, lookup_asm, + 200, PIPE_SHADER_FRAGMENT); + + cso_set_fragment_shader_handle(ctx->cso_context, shader->driver); + return shader; +} + + +static struct vg_shader * setup_lookup_single(struct vg_context *ctx, void *user_data) +{ + char buffer[1024]; + VGImageChannel channel = (VGImageChannel)(user_data); + struct vg_shader *shader; + + switch(channel) { + case VG_RED: + snprintf(buffer, 1023, lookup_single_asm, "xxxx"); + break; + case VG_GREEN: + snprintf(buffer, 1023, lookup_single_asm, "yyyy"); + break; + case VG_BLUE: + snprintf(buffer, 1023, lookup_single_asm, "zzzz"); + break; + case VG_ALPHA: + snprintf(buffer, 1023, lookup_single_asm, "wwww"); + break; + default: + debug_assert(!"Unknown color channel"); + } + + shader = shader_create_from_text(ctx->pipe, buffer, 200, + PIPE_SHADER_FRAGMENT); + + cso_set_fragment_shader_handle(ctx->cso_context, shader->driver); + return shader; +} + +static void execute_filter(struct vg_context *ctx, + struct filter_info *info) +{ + struct pipe_surface *dst_surf; + struct vg_shader *shader; + + cso_save_framebuffer(ctx->cso_context); + cso_save_fragment_shader(ctx->cso_context); + cso_save_viewport(ctx->cso_context); + cso_save_blend(ctx->cso_context); + cso_save_samplers(ctx->cso_context); + cso_save_sampler_textures(ctx->cso_context); + + dst_surf = setup_framebuffer(info->dst); + setup_viewport(info->dst); + setup_blend(); + setup_constant_buffer(ctx, info->const_buffer, info->const_buffer_len); + shader = info->setup_shader(ctx, info->user_data); + setup_samplers(ctx, info); + + renderer_draw_texture(ctx->renderer, + info->src->texture, + info->dst->x, info->dst->y, + info->dst->x + info->dst->width, + info->dst->y + info->dst->height, + info->dst->x, info->dst->y, + info->dst->x + info->dst->width, + info->dst->y + info->dst->height); + + cso_restore_framebuffer(ctx->cso_context); + cso_restore_fragment_shader(ctx->cso_context); + cso_restore_viewport(ctx->cso_context); + cso_restore_blend(ctx->cso_context); + cso_restore_samplers(ctx->cso_context); + cso_restore_sampler_textures(ctx->cso_context); + + vg_shader_destroy(ctx, shader); + + pipe_surface_reference(&dst_surf, NULL); +} + +void vgColorMatrix(VGImage dst, VGImage src, + const VGfloat * matrix) +{ + struct vg_context *ctx = vg_current_context(); + struct vg_image *d, *s; + struct filter_info info; + + if (dst == VG_INVALID_HANDLE || src == VG_INVALID_HANDLE) { + vg_set_error(ctx, VG_BAD_HANDLE_ERROR); + return; + } + if (!matrix || !is_aligned(matrix)) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + d = (struct vg_image*)dst; + s = (struct vg_image*)src; + + if (vg_image_overlaps(d, s)) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + info.dst = d; + info.src = s; + info.setup_shader = &setup_color_matrix; + info.user_data = NULL; + info.const_buffer = matrix; + info.const_buffer_len = 20 * sizeof(VGfloat); + info.tiling_mode = VG_TILE_PAD; + info.extra_texture = 0; + execute_filter(ctx, &info); +} + +static VGfloat texture_offset(VGfloat width, VGint kernelSize, VGint current, VGint shift) +{ + VGfloat diff = current - shift; + + return diff / width; +} + +void vgConvolve(VGImage dst, VGImage src, + VGint kernelWidth, VGint kernelHeight, + VGint shiftX, VGint shiftY, + const VGshort * kernel, + VGfloat scale, + VGfloat bias, + VGTilingMode tilingMode) +{ + struct vg_context *ctx = vg_current_context(); + VGfloat *buffer; + VGint buffer_len; + VGint i, j; + VGint idx = 0; + struct vg_image *d, *s; + VGint kernel_size = kernelWidth * kernelHeight; + struct filter_info info; + const VGint max_kernel_size = vgGeti(VG_MAX_KERNEL_SIZE); + + if (dst == VG_INVALID_HANDLE || src == VG_INVALID_HANDLE) { + vg_set_error(ctx, VG_BAD_HANDLE_ERROR); + return; + } + + if (kernelWidth <= 0 || kernelHeight <= 0 || + kernelWidth > max_kernel_size || kernelHeight > max_kernel_size) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + if (!kernel || !is_aligned_to(kernel, 2)) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + if (tilingMode < VG_TILE_FILL || + tilingMode > VG_TILE_REFLECT) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + d = (struct vg_image*)dst; + s = (struct vg_image*)src; + + if (vg_image_overlaps(d, s)) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + vg_validate_state(ctx); + + buffer_len = 8 + 2 * 4 * kernel_size; + buffer = (VGfloat*)malloc(buffer_len * sizeof(VGfloat)); + + buffer[0] = 0.f; + buffer[1] = 1.f; + buffer[2] = 2.f; /*unused*/ + buffer[3] = 4.f; /*unused*/ + + buffer[4] = kernelWidth * kernelHeight; + buffer[5] = scale; + buffer[6] = bias; + buffer[7] = 0.f; + + idx = 8; + for (j = 0; j < kernelHeight; ++j) { + for (i = 0; i < kernelWidth; ++i) { + VGint index = j * kernelWidth + i; + VGfloat x, y; + + x = texture_offset(s->width, kernelWidth, i, shiftX); + y = texture_offset(s->height, kernelHeight, j, shiftY); + + buffer[idx + index*4 + 0] = x; + buffer[idx + index*4 + 1] = y; + buffer[idx + index*4 + 2] = 0.f; + buffer[idx + index*4 + 3] = 0.f; + } + } + idx += kernel_size * 4; + + for (j = 0; j < kernelHeight; ++j) { + for (i = 0; i < kernelWidth; ++i) { + /* transpose the kernel */ + VGint index = j * kernelWidth + i; + VGint kindex = (kernelWidth - i - 1) * kernelHeight + (kernelHeight - j - 1); + buffer[idx + index*4 + 0] = kernel[kindex]; + buffer[idx + index*4 + 1] = kernel[kindex]; + buffer[idx + index*4 + 2] = kernel[kindex]; + buffer[idx + index*4 + 3] = kernel[kindex]; + } + } + + info.dst = d; + info.src = s; + info.setup_shader = &setup_convolution; + info.user_data = (void*)(long)(buffer_len/4); + info.const_buffer = buffer; + info.const_buffer_len = buffer_len * sizeof(VGfloat); + info.tiling_mode = tilingMode; + info.extra_texture = 0; + execute_filter(ctx, &info); + + free(buffer); +} + +void vgSeparableConvolve(VGImage dst, VGImage src, + VGint kernelWidth, + VGint kernelHeight, + VGint shiftX, VGint shiftY, + const VGshort * kernelX, + const VGshort * kernelY, + VGfloat scale, + VGfloat bias, + VGTilingMode tilingMode) +{ + struct vg_context *ctx = vg_current_context(); + VGshort *kernel; + VGint i, j, idx = 0; + const VGint max_kernel_size = vgGeti(VG_MAX_SEPARABLE_KERNEL_SIZE); + + if (dst == VG_INVALID_HANDLE || src == VG_INVALID_HANDLE) { + vg_set_error(ctx, VG_BAD_HANDLE_ERROR); + return; + } + + if (kernelWidth <= 0 || kernelHeight <= 0 || + kernelWidth > max_kernel_size || kernelHeight > max_kernel_size) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + if (!kernelX || !kernelY || + !is_aligned_to(kernelX, 2) || !is_aligned_to(kernelY, 2)) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + if (tilingMode < VG_TILE_FILL || + tilingMode > VG_TILE_REFLECT) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + kernel = malloc(sizeof(VGshort)*kernelWidth*kernelHeight); + for (i = 0; i < kernelWidth; ++i) { + for (j = 0; j < kernelHeight; ++j) { + kernel[idx] = kernelX[i] * kernelY[j]; + ++idx; + } + } + vgConvolve(dst, src, kernelWidth, kernelHeight, shiftX, shiftY, + kernel, scale, bias, tilingMode); + free(kernel); +} + +static INLINE VGfloat compute_gaussian_componenet(VGfloat x, VGfloat y, + VGfloat stdDeviationX, + VGfloat stdDeviationY) +{ + VGfloat mult = 1 / ( 2 * M_PI * stdDeviationX * stdDeviationY); + VGfloat e = exp( - ( pow(x, 2)/(2*pow(stdDeviationX, 2)) + + pow(y, 2)/(2*pow(stdDeviationY, 2)) ) ); + return mult * e; +} + +static INLINE VGint compute_kernel_size(VGfloat deviation) +{ + VGint size = ceil(2.146 * deviation); + if (size > 11) + return 11; + return size; +} + +static void compute_gaussian_kernel(VGfloat *kernel, + VGint width, VGint height, + VGfloat stdDeviationX, + VGfloat stdDeviationY) +{ + VGint i, j; + VGfloat scale = 0.0f; + + for (j = 0; j < height; ++j) { + for (i = 0; i < width; ++i) { + VGint idx = (height - j -1) * width + (width - i -1); + kernel[idx] = compute_gaussian_componenet(i-(ceil(width/2))-1, + j-ceil(height/2)-1, + stdDeviationX, stdDeviationY); + scale += kernel[idx]; + } + } + + for (j = 0; j < height; ++j) { + for (i = 0; i < width; ++i) { + VGint idx = j * width + i; + kernel[idx] /= scale; + } + } +} + +void vgGaussianBlur(VGImage dst, VGImage src, + VGfloat stdDeviationX, + VGfloat stdDeviationY, + VGTilingMode tilingMode) +{ + struct vg_context *ctx = vg_current_context(); + struct vg_image *d, *s; + VGfloat *buffer, *kernel; + VGint kernel_width, kernel_height, kernel_size; + VGint buffer_len; + VGint idx, i, j; + struct filter_info info; + + if (dst == VG_INVALID_HANDLE || src == VG_INVALID_HANDLE) { + vg_set_error(ctx, VG_BAD_HANDLE_ERROR); + return; + } + if (stdDeviationX <= 0 || stdDeviationY <= 0) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + if (tilingMode < VG_TILE_FILL || + tilingMode > VG_TILE_REFLECT) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + d = (struct vg_image*)dst; + s = (struct vg_image*)src; + + if (vg_image_overlaps(d, s)) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + kernel_width = compute_kernel_size(stdDeviationX); + kernel_height = compute_kernel_size(stdDeviationY); + kernel_size = kernel_width * kernel_height; + kernel = malloc(sizeof(VGfloat)*kernel_size); + compute_gaussian_kernel(kernel, kernel_width, kernel_height, + stdDeviationX, stdDeviationY); + + buffer_len = 8 + 2 * 4 * kernel_size; + buffer = (VGfloat*)malloc(buffer_len * sizeof(VGfloat)); + + buffer[0] = 0.f; + buffer[1] = 1.f; + buffer[2] = 2.f; /*unused*/ + buffer[3] = 4.f; /*unused*/ + + buffer[4] = kernel_width * kernel_height; + buffer[5] = 1.f;/*scale*/ + buffer[6] = 0.f;/*bias*/ + buffer[7] = 0.f; + + idx = 8; + for (j = 0; j < kernel_height; ++j) { + for (i = 0; i < kernel_width; ++i) { + VGint index = j * kernel_width + i; + VGfloat x, y; + + x = texture_offset(s->width, kernel_width, i, kernel_width/2); + y = texture_offset(s->height, kernel_height, j, kernel_height/2); + + buffer[idx + index*4 + 0] = x; + buffer[idx + index*4 + 1] = y; + buffer[idx + index*4 + 2] = 0.f; + buffer[idx + index*4 + 3] = 0.f; + } + } + idx += kernel_size * 4; + + for (j = 0; j < kernel_height; ++j) { + for (i = 0; i < kernel_width; ++i) { + /* transpose the kernel */ + VGint index = j * kernel_width + i; + VGint kindex = (kernel_width - i - 1) * kernel_height + (kernel_height - j - 1); + buffer[idx + index*4 + 0] = kernel[kindex]; + buffer[idx + index*4 + 1] = kernel[kindex]; + buffer[idx + index*4 + 2] = kernel[kindex]; + buffer[idx + index*4 + 3] = kernel[kindex]; + } + } + + info.dst = d; + info.src = s; + info.setup_shader = &setup_convolution; + info.user_data = (void*)(long)(buffer_len/4); + info.const_buffer = buffer; + info.const_buffer_len = buffer_len * sizeof(VGfloat); + info.tiling_mode = tilingMode; + info.extra_texture = 0; + execute_filter(ctx, &info); + + free(buffer); + free(kernel); +} + +void vgLookup(VGImage dst, VGImage src, + const VGubyte * redLUT, + const VGubyte * greenLUT, + const VGubyte * blueLUT, + const VGubyte * alphaLUT, + VGboolean outputLinear, + VGboolean outputPremultiplied) +{ + struct vg_context *ctx = vg_current_context(); + struct vg_image *d, *s; + VGuint color_data[256]; + VGint i; + struct pipe_texture *lut_texture; + VGfloat buffer[4]; + struct filter_info info; + + if (dst == VG_INVALID_HANDLE || src == VG_INVALID_HANDLE) { + vg_set_error(ctx, VG_BAD_HANDLE_ERROR); + return; + } + + if (!redLUT || !greenLUT || !blueLUT || !alphaLUT) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + d = (struct vg_image*)dst; + s = (struct vg_image*)src; + + if (vg_image_overlaps(d, s)) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + for (i = 0; i < 256; ++i) { + color_data[i] = blueLUT[i] << 24 | greenLUT[i] << 16 | + redLUT[i] << 8 | alphaLUT[i]; + } + lut_texture = create_texture_1d(ctx, color_data, 255); + + buffer[0] = 0.f; + buffer[1] = 0.f; + buffer[2] = 1.f; + buffer[3] = 1.f; + + info.dst = d; + info.src = s; + info.setup_shader = &setup_lookup; + info.user_data = NULL; + info.const_buffer = buffer; + info.const_buffer_len = 4 * sizeof(VGfloat); + info.tiling_mode = VG_TILE_PAD; + info.extra_texture = lut_texture; + + execute_filter(ctx, &info); + + pipe_texture_reference(&lut_texture, NULL); +} + +void vgLookupSingle(VGImage dst, VGImage src, + const VGuint * lookupTable, + VGImageChannel sourceChannel, + VGboolean outputLinear, + VGboolean outputPremultiplied) +{ + struct vg_context *ctx = vg_current_context(); + struct vg_image *d, *s; + struct pipe_texture *lut_texture; + VGfloat buffer[4]; + struct filter_info info; + VGuint color_data[256]; + VGint i; + + if (dst == VG_INVALID_HANDLE || src == VG_INVALID_HANDLE) { + vg_set_error(ctx, VG_BAD_HANDLE_ERROR); + return; + } + + if (!lookupTable || !is_aligned(lookupTable)) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + if (sourceChannel != VG_RED && sourceChannel != VG_GREEN && + sourceChannel != VG_BLUE && sourceChannel != VG_ALPHA) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + d = (struct vg_image*)dst; + s = (struct vg_image*)src; + + if (vg_image_overlaps(d, s)) { + vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); + return; + } + + for (i = 0; i < 256; ++i) { + VGuint rgba = lookupTable[i]; + VGubyte blue, green, red, alpha; + red = (rgba & 0xff000000)>>24; + green = (rgba & 0x00ff0000)>>16; + blue = (rgba & 0x0000ff00)>> 8; + alpha = (rgba & 0x000000ff)>> 0; + color_data[i] = blue << 24 | green << 16 | + red << 8 | alpha; + } + lut_texture = create_texture_1d(ctx, color_data, 256); + + buffer[0] = 0.f; + buffer[1] = 0.f; + buffer[2] = 1.f; + buffer[3] = 1.f; + + info.dst = d; + info.src = s; + info.setup_shader = &setup_lookup_single; + info.user_data = (void*)sourceChannel; + info.const_buffer = buffer; + info.const_buffer_len = 4 * sizeof(VGfloat); + info.tiling_mode = VG_TILE_PAD; + info.extra_texture = lut_texture; + + execute_filter(ctx, &info); + + pipe_texture_reference(&lut_texture, NULL); +} |