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Diffstat (limited to 'src/gallium/state_trackers/xorg/xorg_renderer.c')
-rw-r--r--src/gallium/state_trackers/xorg/xorg_renderer.c699
1 files changed, 699 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/xorg/xorg_renderer.c b/src/gallium/state_trackers/xorg/xorg_renderer.c
new file mode 100644
index 00000000000..cbb84a8c0da
--- /dev/null
+++ b/src/gallium/state_trackers/xorg/xorg_renderer.c
@@ -0,0 +1,699 @@
+#include "xorg_exa.h"
+#include "xorg_renderer.h"
+
+#include "xorg_exa_tgsi.h"
+
+#include "cso_cache/cso_context.h"
+#include "util/u_draw_quad.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "util/u_rect.h"
+
+#include "pipe/p_inlines.h"
+
+#include <math.h>
+
+#define floatsEqual(x, y) (fabs(x - y) <= 0.00001f * MIN2(fabs(x), fabs(y)))
+#define floatIsZero(x) (floatsEqual((x) + 1, 1))
+
+#define NUM_COMPONENTS 4
+
+static INLINE boolean is_affine(float *matrix)
+{
+ return floatIsZero(matrix[2]) && floatIsZero(matrix[5])
+ && floatsEqual(matrix[8], 1);
+}
+static INLINE void map_point(float *mat, float x, float y,
+ float *out_x, float *out_y)
+{
+ if (!mat) {
+ *out_x = x;
+ *out_y = y;
+ return;
+ }
+
+ *out_x = mat[0]*x + mat[3]*y + mat[6];
+ *out_y = mat[1]*x + mat[4]*y + mat[7];
+ if (!is_affine(mat)) {
+ float w = 1/(mat[2]*x + mat[5]*y + mat[8]);
+ *out_x *= w;
+ *out_y *= w;
+ }
+}
+
+static INLINE struct pipe_buffer *
+renderer_buffer_create(struct xorg_renderer *r)
+{
+ struct pipe_buffer *buf =
+ pipe_user_buffer_create(r->pipe->screen,
+ r->buffer,
+ sizeof(float)*
+ r->buffer_size);
+ r->buffer_size = 0;
+
+ return buf;
+}
+
+static INLINE void
+renderer_draw(struct xorg_renderer *r)
+{
+ struct pipe_context *pipe = r->pipe;
+ struct pipe_buffer *buf = 0;
+ int num_verts = r->buffer_size/(r->attrs_per_vertex * NUM_COMPONENTS);
+
+ if (!r->buffer_size)
+ return;
+
+ buf = renderer_buffer_create(r);
+
+
+ if (buf) {
+ util_draw_vertex_buffer(pipe, buf, 0,
+ PIPE_PRIM_QUADS,
+ num_verts, /* verts */
+ r->attrs_per_vertex); /* attribs/vert */
+
+ pipe_buffer_reference(&buf, NULL);
+ }
+}
+
+static INLINE void
+renderer_draw_conditional(struct xorg_renderer *r,
+ int next_batch)
+{
+ if (r->buffer_size + next_batch >= BUF_SIZE ||
+ (next_batch == 0 && r->buffer_size)) {
+ renderer_draw(r);
+ }
+}
+
+static void
+renderer_init_state(struct xorg_renderer *r)
+{
+ struct pipe_depth_stencil_alpha_state dsa;
+ struct pipe_rasterizer_state raster;
+
+ /* set common initial clip state */
+ memset(&dsa, 0, sizeof(struct pipe_depth_stencil_alpha_state));
+ cso_set_depth_stencil_alpha(r->cso, &dsa);
+
+
+ /* XXX: move to renderer_init_state? */
+ memset(&raster, 0, sizeof(struct pipe_rasterizer_state));
+ raster.gl_rasterization_rules = 1;
+ cso_set_rasterizer(r->cso, &raster);
+
+}
+
+
+static INLINE void
+add_vertex_color(struct xorg_renderer *r,
+ float x, float y,
+ float color[4])
+{
+ float *vertex = r->buffer + r->buffer_size;
+
+ vertex[0] = x;
+ vertex[1] = y;
+ vertex[2] = 0.f; /*z*/
+ vertex[3] = 1.f; /*w*/
+
+ vertex[4] = color[0]; /*r*/
+ vertex[5] = color[1]; /*g*/
+ vertex[6] = color[2]; /*b*/
+ vertex[7] = color[3]; /*a*/
+
+ r->buffer_size += 8;
+}
+
+static INLINE void
+add_vertex_1tex(struct xorg_renderer *r,
+ float x, float y, float s, float t)
+{
+ float *vertex = r->buffer + r->buffer_size;
+
+ vertex[0] = x;
+ vertex[1] = y;
+ vertex[2] = 0.f; /*z*/
+ vertex[3] = 1.f; /*w*/
+
+ vertex[4] = s; /*s*/
+ vertex[5] = t; /*t*/
+ vertex[6] = 0.f; /*r*/
+ vertex[7] = 1.f; /*q*/
+
+ r->buffer_size += 8;
+}
+
+static void
+add_vertex_data1(struct xorg_renderer *r,
+ float srcX, float srcY, float dstX, float dstY,
+ float width, float height,
+ struct pipe_texture *src, float *src_matrix)
+{
+ float s0, t0, s1, t1, s2, t2, s3, t3;
+ float pt0[2], pt1[2], pt2[2], pt3[2];
+
+ pt0[0] = srcX;
+ pt0[1] = srcY;
+ pt1[0] = (srcX + width);
+ pt1[1] = srcY;
+ pt2[0] = (srcX + width);
+ pt2[1] = (srcY + height);
+ pt3[0] = srcX;
+ pt3[1] = (srcY + height);
+
+ if (src_matrix) {
+ map_point(src_matrix, pt0[0], pt0[1], &pt0[0], &pt0[1]);
+ map_point(src_matrix, pt1[0], pt1[1], &pt1[0], &pt1[1]);
+ map_point(src_matrix, pt2[0], pt2[1], &pt2[0], &pt2[1]);
+ map_point(src_matrix, pt3[0], pt3[1], &pt3[0], &pt3[1]);
+ }
+
+ s0 = pt0[0] / src->width[0];
+ s1 = pt1[0] / src->width[0];
+ s2 = pt2[0] / src->width[0];
+ s3 = pt3[0] / src->width[0];
+ t0 = pt0[1] / src->height[0];
+ t1 = pt1[1] / src->height[0];
+ t2 = pt2[1] / src->height[0];
+ t3 = pt3[1] / src->height[0];
+
+ /* 1st vertex */
+ add_vertex_1tex(r, dstX, dstY, s0, t0);
+ /* 2nd vertex */
+ add_vertex_1tex(r, dstX + width, dstY, s1, t1);
+ /* 3rd vertex */
+ add_vertex_1tex(r, dstX + width, dstY + height, s2, t2);
+ /* 4th vertex */
+ add_vertex_1tex(r, dstX, dstY + height, s3, t3);
+}
+
+
+static INLINE void
+add_vertex_2tex(struct xorg_renderer *r,
+ float x, float y,
+ float s0, float t0, float s1, float t1)
+{
+ float *vertex = r->buffer + r->buffer_size;
+
+ vertex[0] = x;
+ vertex[1] = y;
+ vertex[2] = 0.f; /*z*/
+ vertex[3] = 1.f; /*w*/
+
+ vertex[4] = s0; /*s*/
+ vertex[5] = t0; /*t*/
+ vertex[6] = 0.f; /*r*/
+ vertex[7] = 1.f; /*q*/
+
+ vertex[8] = s1; /*s*/
+ vertex[9] = t1; /*t*/
+ vertex[10] = 0.f; /*r*/
+ vertex[11] = 1.f; /*q*/
+
+ r->buffer_size += 12;
+}
+
+static void
+add_vertex_data2(struct xorg_renderer *r,
+ float srcX, float srcY, float maskX, float maskY,
+ float dstX, float dstY, float width, float height,
+ struct pipe_texture *src,
+ struct pipe_texture *mask,
+ float *src_matrix, float *mask_matrix)
+{
+ float src_s0, src_t0, src_s1, src_t1;
+ float mask_s0, mask_t0, mask_s1, mask_t1;
+ float spt0[2], spt1[2];
+ float mpt0[2], mpt1[2];
+
+ spt0[0] = srcX;
+ spt0[1] = srcY;
+ spt1[0] = srcX + width;
+ spt1[1] = srcY + height;
+
+ mpt0[0] = maskX;
+ mpt0[1] = maskY;
+ mpt1[0] = maskX + width;
+ mpt1[1] = maskY + height;
+
+ if (src_matrix) {
+ map_point(src_matrix, spt0[0], spt0[1], &spt0[0], &spt0[1]);
+ map_point(src_matrix, spt1[0], spt1[1], &spt1[0], &spt1[1]);
+ }
+
+ if (mask_matrix) {
+ map_point(mask_matrix, mpt0[0], mpt0[1], &mpt0[0], &mpt0[1]);
+ map_point(mask_matrix, mpt1[0], mpt1[1], &mpt1[0], &mpt1[1]);
+ }
+
+ src_s0 = spt0[0] / src->width[0];
+ src_t0 = spt0[1] / src->height[0];
+ src_s1 = spt1[0] / src->width[0];
+ src_t1 = spt1[1] / src->height[0];
+
+ mask_s0 = mpt0[0] / mask->width[0];
+ mask_t0 = mpt0[1] / mask->height[0];
+ mask_s1 = mpt1[0] / mask->width[0];
+ mask_t1 = mpt1[1] / mask->height[0];
+
+ /* 1st vertex */
+ add_vertex_2tex(r, dstX, dstY,
+ src_s0, src_t0, mask_s0, mask_t0);
+ /* 2nd vertex */
+ add_vertex_2tex(r, dstX + width, dstY,
+ src_s1, src_t0, mask_s1, mask_t0);
+ /* 3rd vertex */
+ add_vertex_2tex(r, dstX + width, dstY + height,
+ src_s1, src_t1, mask_s1, mask_t1);
+ /* 4th vertex */
+ add_vertex_2tex(r, dstX, dstY + height,
+ src_s0, src_t1, mask_s0, mask_t1);
+}
+
+static struct pipe_buffer *
+setup_vertex_data_yuv(struct xorg_renderer *r,
+ float srcX, float srcY, float srcW, float srcH,
+ float dstX, float dstY, float dstW, float dstH,
+ struct pipe_texture **tex)
+{
+ float s0, t0, s1, t1;
+ float spt0[2], spt1[2];
+
+ spt0[0] = srcX;
+ spt0[1] = srcY;
+ spt1[0] = srcX + srcW;
+ spt1[1] = srcY + srcH;
+
+ s0 = spt0[0] / tex[0]->width[0];
+ t0 = spt0[1] / tex[0]->height[0];
+ s1 = spt1[0] / tex[0]->width[0];
+ t1 = spt1[1] / tex[0]->height[0];
+
+ /* 1st vertex */
+ add_vertex_1tex(r, dstX, dstY, s0, t0);
+ /* 2nd vertex */
+ add_vertex_1tex(r, dstX + dstW, dstY,
+ s1, t0);
+ /* 3rd vertex */
+ add_vertex_1tex(r, dstX + dstW, dstY + dstH,
+ s1, t1);
+ /* 4th vertex */
+ add_vertex_1tex(r, dstX, dstY + dstH,
+ s0, t1);
+
+ return renderer_buffer_create(r);
+}
+
+
+
+/* Set up framebuffer, viewport and vertex shader constant buffer
+ * state for a particular destinaton surface. In all our rendering,
+ * these concepts are linked.
+ */
+void renderer_bind_destination(struct xorg_renderer *r,
+ struct pipe_surface *surface,
+ int width,
+ int height )
+{
+
+ struct pipe_framebuffer_state fb;
+ struct pipe_viewport_state viewport;
+
+ /* Framebuffer uses actual surface width/height
+ */
+ memset(&fb, 0, sizeof fb);
+ fb.width = surface->width;
+ fb.height = surface->height;
+ fb.nr_cbufs = 1;
+ fb.cbufs[0] = surface;
+ fb.zsbuf = 0;
+
+ /* Viewport just touches the bit we're interested in:
+ */
+ viewport.scale[0] = width / 2.f;
+ viewport.scale[1] = height / 2.f;
+ viewport.scale[2] = 1.0;
+ viewport.scale[3] = 1.0;
+ viewport.translate[0] = width / 2.f;
+ viewport.translate[1] = height / 2.f;
+ viewport.translate[2] = 0.0;
+ viewport.translate[3] = 0.0;
+
+ /* Constant buffer set up to match viewport dimensions:
+ */
+ if (r->fb_width != width ||
+ r->fb_height != height)
+ {
+ float vs_consts[8] = {
+ 2.f/width, 2.f/height, 1, 1,
+ -1, -1, 0, 0
+ };
+
+ r->fb_width = width;
+ r->fb_height = height;
+
+ renderer_set_constants(r, PIPE_SHADER_VERTEX,
+ vs_consts, sizeof vs_consts);
+ }
+
+ cso_set_framebuffer(r->cso, &fb);
+ cso_set_viewport(r->cso, &viewport);
+}
+
+
+struct xorg_renderer * renderer_create(struct pipe_context *pipe)
+{
+ struct xorg_renderer *renderer = CALLOC_STRUCT(xorg_renderer);
+
+ renderer->pipe = pipe;
+ renderer->cso = cso_create_context(pipe);
+ renderer->shaders = xorg_shaders_create(renderer);
+
+ renderer_init_state(renderer);
+
+ return renderer;
+}
+
+void renderer_destroy(struct xorg_renderer *r)
+{
+ struct pipe_constant_buffer *vsbuf = &r->vs_const_buffer;
+ struct pipe_constant_buffer *fsbuf = &r->fs_const_buffer;
+
+ if (vsbuf && vsbuf->buffer)
+ pipe_buffer_reference(&vsbuf->buffer, NULL);
+
+ if (fsbuf && fsbuf->buffer)
+ pipe_buffer_reference(&fsbuf->buffer, NULL);
+
+ if (r->shaders) {
+ xorg_shaders_destroy(r->shaders);
+ r->shaders = NULL;
+ }
+
+ if (r->cso) {
+ cso_release_all(r->cso);
+ cso_destroy_context(r->cso);
+ r->cso = NULL;
+ }
+}
+
+
+
+
+
+void renderer_set_constants(struct xorg_renderer *r,
+ int shader_type,
+ const float *params,
+ int param_bytes)
+{
+ struct pipe_constant_buffer *cbuf =
+ (shader_type == PIPE_SHADER_VERTEX) ? &r->vs_const_buffer :
+ &r->fs_const_buffer;
+
+ pipe_buffer_reference(&cbuf->buffer, NULL);
+ cbuf->buffer = pipe_buffer_create(r->pipe->screen, 16,
+ PIPE_BUFFER_USAGE_CONSTANT,
+ param_bytes);
+
+ if (cbuf->buffer) {
+ pipe_buffer_write(r->pipe->screen, cbuf->buffer,
+ 0, param_bytes, params);
+ }
+ r->pipe->set_constant_buffer(r->pipe, shader_type, 0, cbuf);
+}
+
+
+void renderer_copy_prepare(struct xorg_renderer *r,
+ struct pipe_surface *dst_surface,
+ struct pipe_texture *src_texture)
+{
+ struct pipe_context *pipe = r->pipe;
+ struct pipe_screen *screen = pipe->screen;
+ struct xorg_shader shader;
+
+ assert(screen->is_format_supported(screen, dst_surface->format,
+ PIPE_TEXTURE_2D,
+ PIPE_TEXTURE_USAGE_RENDER_TARGET,
+ 0));
+
+
+ /* set misc state we care about */
+ {
+ 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;
+ blend.colormask = PIPE_MASK_RGBA;
+ cso_set_blend(r->cso, &blend);
+ }
+
+ /* sampler */
+ {
+ struct pipe_sampler_state sampler;
+ memset(&sampler, 0, sizeof(sampler));
+ sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
+ sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
+ sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
+ sampler.normalized_coords = 1;
+ cso_single_sampler(r->cso, 0, &sampler);
+ cso_single_sampler_done(r->cso);
+ }
+
+ renderer_bind_destination(r, dst_surface,
+ dst_surface->width,
+ dst_surface->height);
+
+ /* texture */
+ cso_set_sampler_textures(r->cso, 1, &src_texture);
+
+ /* shaders */
+ shader = xorg_shaders_get(r->shaders,
+ VS_COMPOSITE,
+ FS_COMPOSITE);
+ cso_set_vertex_shader_handle(r->cso, shader.vs);
+ cso_set_fragment_shader_handle(r->cso, shader.fs);
+
+ r->buffer_size = 0;
+ r->attrs_per_vertex = 2;
+}
+
+struct pipe_texture *
+renderer_clone_texture(struct xorg_renderer *r,
+ struct pipe_texture *src)
+{
+ enum pipe_format format;
+ struct pipe_context *pipe = r->pipe;
+ struct pipe_screen *screen = pipe->screen;
+ struct pipe_texture *pt;
+ struct pipe_texture templ;
+
+ if (pipe->is_texture_referenced(pipe, src, 0, 0) &
+ PIPE_REFERENCED_FOR_WRITE)
+ pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
+
+ /* the coming in texture should already have that invariance */
+ debug_assert(screen->is_format_supported(screen, src->format,
+ PIPE_TEXTURE_2D,
+ PIPE_TEXTURE_USAGE_SAMPLER, 0));
+
+ format = src->format;
+
+ memset(&templ, 0, sizeof(templ));
+ templ.target = PIPE_TEXTURE_2D;
+ templ.format = format;
+ templ.last_level = 0;
+ templ.width[0] = src->width[0];
+ templ.height[0] = src->height[0];
+ templ.depth[0] = 1;
+ pf_get_block(format, &templ.block);
+ templ.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER;
+
+ pt = screen->texture_create(screen, &templ);
+
+ debug_assert(!pt || pipe_is_referenced(&pt->reference));
+
+ if (!pt)
+ return NULL;
+
+ {
+ /* copy source framebuffer surface into texture */
+ struct pipe_surface *ps_read = screen->get_tex_surface(
+ screen, src, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_READ);
+ struct pipe_surface *ps_tex = screen->get_tex_surface(
+ screen, pt, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_WRITE );
+ if (pipe->surface_copy) {
+ pipe->surface_copy(pipe,
+ ps_tex, /* dest */
+ 0, 0, /* destx/y */
+ ps_read,
+ 0, 0, src->width[0], src->height[0]);
+ } else {
+ util_surface_copy(pipe, FALSE,
+ ps_tex, /* dest */
+ 0, 0, /* destx/y */
+ ps_read,
+ 0, 0, src->width[0], src->height[0]);
+ }
+ pipe_surface_reference(&ps_read, NULL);
+ pipe_surface_reference(&ps_tex, NULL);
+ }
+
+ return pt;
+}
+
+
+void renderer_copy_pixmap(struct xorg_renderer *r,
+ int dx, int dy,
+ int sx, int sy,
+ int width, int height,
+ float src_width,
+ float src_height)
+{
+ float s0, t0, s1, t1;
+ float x0, y0, x1, y1;
+
+
+ /* XXX: could put the texcoord scaling calculation into the vertex
+ * shader.
+ */
+ s0 = sx / src_width;
+ s1 = (sx + width) / src_width;
+ t0 = sy / src_height;
+ t1 = (sy + height) / src_height;
+
+ x0 = dx;
+ x1 = dx + width;
+ y0 = dy;
+ y1 = dy + height;
+
+ /* draw quad */
+ renderer_draw_conditional(r, 4*8);
+ add_vertex_1tex(r, x0, y0, s0, t0);
+ add_vertex_1tex(r, x1, y0, s1, t0);
+ add_vertex_1tex(r, x1, y1, s1, t1);
+ add_vertex_1tex(r, x0, y1, s0, t1);
+}
+
+
+
+
+void renderer_draw_yuv(struct xorg_renderer *r,
+ int src_x, int src_y, int src_w, int src_h,
+ int dst_x, int dst_y, int dst_w, int dst_h,
+ struct pipe_texture **textures)
+{
+ struct pipe_context *pipe = r->pipe;
+ struct pipe_buffer *buf = 0;
+
+ buf = setup_vertex_data_yuv(r,
+ src_x, src_y, src_w, src_h,
+ dst_x, dst_y, dst_w, dst_h,
+ textures);
+
+ if (buf) {
+ const int num_attribs = 2; /*pos + tex coord*/
+
+ util_draw_vertex_buffer(pipe, buf, 0,
+ PIPE_PRIM_QUADS,
+ 4, /* verts */
+ num_attribs); /* attribs/vert */
+
+ pipe_buffer_reference(&buf, NULL);
+ }
+}
+
+void renderer_begin_solid(struct xorg_renderer *r)
+{
+ r->buffer_size = 0;
+ r->attrs_per_vertex = 2;
+}
+
+void renderer_solid(struct xorg_renderer *r,
+ int x0, int y0,
+ int x1, int y1,
+ float *color)
+{
+ /*
+ debug_printf("solid rect[(%d, %d), (%d, %d)], rgba[%f, %f, %f, %f]\n",
+ x0, y0, x1, y1, color[0], color[1], color[2], color[3]);*/
+
+ renderer_draw_conditional(r, 4 * 8);
+
+ /* 1st vertex */
+ add_vertex_color(r, x0, y0, color);
+ /* 2nd vertex */
+ add_vertex_color(r, x1, y0, color);
+ /* 3rd vertex */
+ add_vertex_color(r, x1, y1, color);
+ /* 4th vertex */
+ add_vertex_color(r, x0, y1, color);
+}
+
+void renderer_draw_flush(struct xorg_renderer *r)
+{
+ renderer_draw_conditional(r, 0);
+}
+
+void renderer_begin_textures(struct xorg_renderer *r,
+ struct pipe_texture **textures,
+ int num_textures)
+{
+ r->attrs_per_vertex = 1 + num_textures;
+ r->buffer_size = 0;
+}
+
+void renderer_texture(struct xorg_renderer *r,
+ int *pos,
+ int width, int height,
+ struct pipe_texture **textures,
+ int num_textures,
+ float *src_matrix,
+ float *mask_matrix)
+{
+
+#if 0
+ if (src_matrix) {
+ debug_printf("src_matrix = \n");
+ debug_printf("%f, %f, %f\n", src_matrix[0], src_matrix[1], src_matrix[2]);
+ debug_printf("%f, %f, %f\n", src_matrix[3], src_matrix[4], src_matrix[5]);
+ debug_printf("%f, %f, %f\n", src_matrix[6], src_matrix[7], src_matrix[8]);
+ }
+ if (mask_matrix) {
+ debug_printf("mask_matrix = \n");
+ debug_printf("%f, %f, %f\n", mask_matrix[0], mask_matrix[1], mask_matrix[2]);
+ debug_printf("%f, %f, %f\n", mask_matrix[3], mask_matrix[4], mask_matrix[5]);
+ debug_printf("%f, %f, %f\n", mask_matrix[6], mask_matrix[7], mask_matrix[8]);
+ }
+#endif
+
+ switch(r->attrs_per_vertex) {
+ case 2:
+ renderer_draw_conditional(r, 4 * 8);
+ add_vertex_data1(r,
+ pos[0], pos[1], /* src */
+ pos[4], pos[5], /* dst */
+ width, height,
+ textures[0], src_matrix);
+ break;
+ case 3:
+ renderer_draw_conditional(r, 4 * 12);
+ add_vertex_data2(r,
+ pos[0], pos[1], /* src */
+ pos[2], pos[3], /* mask */
+ pos[4], pos[5], /* dst */
+ width, height,
+ textures[0], textures[1],
+ src_matrix, mask_matrix);
+ break;
+ default:
+ debug_assert(!"Unsupported number of textures");
+ break;
+ }
+}