From 223c1225ea92817a411e86b81adfcae04dba1636 Mon Sep 17 00:00:00 2001 From: Neil Roberts Date: Tue, 9 Dec 2008 15:10:33 +0000 Subject: [PATCH] Support cogl_texture_multiple_rectangles in GL ES backend --- gles/cogl-context.c | 14 +- gles/cogl-context.h | 11 +- gles/cogl-texture.c | 343 +++++++++++++++++++++++++------------------- 3 files changed, 212 insertions(+), 156 deletions(-) diff --git a/gles/cogl-context.c b/gles/cogl-context.c index c7c768dec..b09568de4 100644 --- a/gles/cogl-context.c +++ b/gles/cogl-context.c @@ -59,9 +59,11 @@ cogl_create_context () _context->last_path = 0; _context->texture_handles = NULL; - _context->texture_vertices_size = 0; - _context->texture_vertices = NULL; - + _context->texture_vertices = g_array_new (FALSE, FALSE, + sizeof (CoglTextureGLVertex)); + _context->texture_indices = g_array_new (FALSE, FALSE, + sizeof (GLushort)); + _context->fbo_handles = NULL; _context->program_handles = NULL; _context->shader_handles = NULL; @@ -104,8 +106,10 @@ cogl_destroy_context () #endif if (_context->texture_vertices) - g_free (_context->texture_vertices); - + g_array_free (_context->texture_vertices, TRUE); + if (_context->texture_indices) + g_array_free (_context->texture_indices, TRUE); + if (_context->texture_handles) g_array_free (_context->texture_handles, TRUE); if (_context->fbo_handles) diff --git a/gles/cogl-context.h b/gles/cogl-context.h index b62903efc..5d835712a 100644 --- a/gles/cogl-context.h +++ b/gles/cogl-context.h @@ -65,9 +65,14 @@ typedef struct /* Textures */ GArray *texture_handles; - CoglTextureGLVertex *texture_vertices; - gulong texture_vertices_size; - + GArray *texture_vertices; + GArray *texture_indices; + /* The gl texture number that the above vertices apply to. This to + detect when a different slice is encountered so that the vertices + can be flushed */ + GLuint texture_current; + GLenum texture_target; + /* Framebuffer objects */ GArray *fbo_handles; CoglBufferTarget draw_buffer; diff --git a/gles/cogl-texture.c b/gles/cogl-texture.c index 5a75eb389..9fa677687 100644 --- a/gles/cogl-texture.c +++ b/gles/cogl-texture.c @@ -2047,6 +2047,79 @@ cogl_texture_get_data (CoglHandle handle, return byte_size; } +static void +_cogl_texture_flush_vertices (void) +{ + _COGL_GET_CONTEXT (ctx, NO_RETVAL); + + if (ctx->texture_vertices->len > 0) + { + CoglTextureGLVertex *p + = (CoglTextureGLVertex *) ctx->texture_vertices->data; + + GE( glVertexPointer (2, GL_FLOAT, + sizeof (CoglTextureGLVertex), p->v ) ); + GE( glTexCoordPointer (2, GL_FLOAT, + sizeof (CoglTextureGLVertex), p->t ) ); + + GE( glBindTexture (ctx->texture_target, ctx->texture_current) ); + GE( glDrawElements (GL_TRIANGLES, + ctx->texture_indices->len, + GL_UNSIGNED_SHORT, + ctx->texture_indices->data) ); + + g_array_set_size (ctx->texture_vertices, 0); + g_array_set_size (ctx->texture_indices, 0); + } +} + +static void +_cogl_texture_add_quad_vertices (GLfloat x1, GLfloat y1, + GLfloat x2, GLfloat y2, + GLfloat tx1, GLfloat ty1, + GLfloat tx2, GLfloat ty2) +{ + CoglTextureGLVertex *p; + GLushort first_vert; + GLushort *q; + + _COGL_GET_CONTEXT (ctx, NO_RETVAL); + + /* Add the four vertices of the quad to the list of queued + vertices */ + first_vert = ctx->texture_vertices->len; + g_array_set_size (ctx->texture_vertices, first_vert + 4); + p = &g_array_index (ctx->texture_vertices, CoglTextureGLVertex, first_vert); + + p->v[0] = x1; p->v[1] = y1; + p->t[0] = tx1; p->t[1] = ty1; + p++; + p->v[0] = x1; p->v[1] = y2; + p->t[0] = tx1; p->t[1] = ty2; + p++; + p->v[0] = x2; p->v[1] = y2; + p->t[0] = tx2; p->t[1] = ty2; + p++; + p->v[0] = x2; p->v[1] = y1; + p->t[0] = tx2; p->t[1] = ty1; + p++; + + /* Add two triangles to the list of indices. That makes six new + indices but two of the vertices in the triangles are shared. */ + g_array_set_size (ctx->texture_indices, + ctx->texture_indices->len + 6); + q = &g_array_index (ctx->texture_indices, GLushort, + ctx->texture_indices->len - 6); + + *(q++) = first_vert + 0; + *(q++) = first_vert + 1; + *(q++) = first_vert + 3; + + *(q++) = first_vert + 1; + *(q++) = first_vert + 2; + *(q++) = first_vert + 3; +} + static void _cogl_texture_quad_sw (CoglTexture *tex, CoglFixed x1, @@ -2067,31 +2140,13 @@ _cogl_texture_quad_sw (CoglTexture *tex, CoglFixed slice_tx2 , slice_ty2; CoglFixed slice_qx1 , slice_qy1; CoglFixed slice_qx2 , slice_qy2; - GLfloat tex_coords[8]; - GLfloat quad_coords[8]; GLuint gl_handle; - gulong enable_flags = (COGL_ENABLE_TEXTURE_2D - | COGL_ENABLE_VERTEX_ARRAY - | COGL_ENABLE_TEXCOORD_ARRAY); - + _COGL_GET_CONTEXT (ctx, NO_RETVAL); #if COGL_DEBUG printf("=== Drawing Tex Quad (Software Tiling Mode) ===\n"); #endif - - - /* Prepare GL state */ - if (ctx->color_alpha < 255 - || tex->bitmap.format & COGL_A_BIT) - { - enable_flags |= COGL_ENABLE_BLEND; - } - - if (ctx->enable_backface_culling) - enable_flags |= COGL_ENABLE_BACKFACE_CULLING; - - cogl_enable (enable_flags); /* If the texture coordinates are backwards then swap both the geometry and texture coordinates so that the texture will be @@ -2115,10 +2170,7 @@ _cogl_texture_quad_sw (CoglTexture *tex, ty1 = ty2; ty2 = temp; } - - GE( glTexCoordPointer (2, GL_FLOAT, 0, tex_coords) ); - GE( glVertexPointer (2, GL_FLOAT, 0, quad_coords) ); - + /* Scale ratio from texture to quad widths */ tw = COGL_FIXED_FROM_INT (tex->bitmap.width); th = COGL_FIXED_FROM_INT (tex->bitmap.height); @@ -2158,17 +2210,16 @@ _cogl_texture_quad_sw (CoglTexture *tex, slice_qy2 = first_qy + COGL_FIXED_MUL (iter_y.intersect_end - first_ty, tqy); - + /* Localize slice texture coordinates */ slice_ty1 = iter_y.intersect_start - iter_y.pos; slice_ty2 = iter_y.intersect_end - iter_y.pos; - + /* Normalize texture coordinates to current slice (rectangle texture targets take denormalized) */ slice_ty1 /= iter_y.span->size; slice_ty2 /= iter_y.span->size; - - + /* Iterate until whole quad width covered */ for (_cogl_span_iter_begin (&iter_x, tex->slice_x_spans, first_tx, tx1, tx2) ; @@ -2188,12 +2239,12 @@ _cogl_texture_quad_sw (CoglTexture *tex, /* Localize slice texture coordinates */ slice_tx1 = iter_x.intersect_start - iter_x.pos; slice_tx2 = iter_x.intersect_end - iter_x.pos; - + /* Normalize texture coordinates to current slice (rectangle texture targets take denormalized) */ slice_tx1 /= iter_x.span->size; slice_tx2 /= iter_x.span->size; - + #if COGL_DEBUG printf("~~~~~ slice (%d,%d)\n", iter_x.index, iter_y.index); printf("qx1: %f\n", COGL_FIXED_TO_FLOAT (slice_qx1)); @@ -2210,26 +2261,23 @@ _cogl_texture_quad_sw (CoglTexture *tex, gl_handle = g_array_index (tex->slice_gl_handles, GLuint, iter_y.index * iter_x.array->len + iter_x.index); - - GE( cogl_gles2_wrapper_bind_texture (tex->gl_target, gl_handle, - tex->gl_intformat) ); -#define CFX_F COGL_FIXED_TO_FLOAT - - /* Draw textured quad */ - tex_coords[0] = CFX_F(slice_tx1); tex_coords[1] = CFX_F(slice_ty2); - tex_coords[2] = CFX_F(slice_tx2); tex_coords[3] = CFX_F(slice_ty2); - tex_coords[4] = CFX_F(slice_tx1); tex_coords[5] = CFX_F(slice_ty1); - tex_coords[6] = CFX_F(slice_tx2); tex_coords[7] = CFX_F(slice_ty1); + /* If we're using a different texture from the one already queued + then flush the vertices */ + if (ctx->texture_vertices->len > 0 + && gl_handle != ctx->texture_current) + _cogl_texture_flush_vertices (); + ctx->texture_target = tex->gl_target; + ctx->texture_current = gl_handle; - quad_coords[0] = CFX_F(slice_qx1); quad_coords[1] = CFX_F(slice_qy2); - quad_coords[2] = CFX_F(slice_qx2); quad_coords[3] = CFX_F(slice_qy2); - quad_coords[4] = CFX_F(slice_qx1); quad_coords[5] = CFX_F(slice_qy1); - quad_coords[6] = CFX_F(slice_qx2); quad_coords[7] = CFX_F(slice_qy1); - - GE (glDrawArrays (GL_TRIANGLE_STRIP, 0, 4) ); - -#undef CFX_F + _cogl_texture_add_quad_vertices (COGL_FIXED_TO_FLOAT (slice_qx1), + COGL_FIXED_TO_FLOAT (slice_qy1), + COGL_FIXED_TO_FLOAT (slice_qx2), + COGL_FIXED_TO_FLOAT (slice_qy2), + COGL_FIXED_TO_FLOAT (slice_tx1), + COGL_FIXED_TO_FLOAT (slice_ty1), + COGL_FIXED_TO_FLOAT (slice_tx2), + COGL_FIXED_TO_FLOAT (slice_ty2)); } } } @@ -2245,41 +2293,27 @@ _cogl_texture_quad_hw (CoglTexture *tex, CoglFixed tx2, CoglFixed ty2) { - GLfloat tex_coords[8]; - GLfloat quad_coords[8]; GLuint gl_handle; CoglTexSliceSpan *x_span; CoglTexSliceSpan *y_span; - gulong enable_flags = (COGL_ENABLE_TEXTURE_2D - | COGL_ENABLE_VERTEX_ARRAY - | COGL_ENABLE_TEXCOORD_ARRAY); #if COGL_DEBUG printf("=== Drawing Tex Quad (Hardware Tiling Mode) ===\n"); #endif - - _COGL_GET_CONTEXT (ctx, NO_RETVAL); - - /* Prepare GL state */ - if (ctx->color_alpha < 255 - || tex->bitmap.format & COGL_A_BIT) - { - enable_flags |= COGL_ENABLE_BLEND; - } - - if (ctx->enable_backface_culling) - enable_flags |= COGL_ENABLE_BACKFACE_CULLING; - cogl_enable (enable_flags); - - GE( glTexCoordPointer (2, GL_FLOAT, 0, tex_coords) ); - GE( glVertexPointer (2, GL_FLOAT, 0, quad_coords) ); - + _COGL_GET_CONTEXT (ctx, NO_RETVAL); + /* Pick and bind opengl texture object */ gl_handle = g_array_index (tex->slice_gl_handles, GLuint, 0); - GE( cogl_gles2_wrapper_bind_texture (tex->gl_target, gl_handle, - tex->gl_intformat) ); - + + /* If we're using a different texture from the one already queued + then flush the vertices */ + if (ctx->texture_vertices->len > 0 + && gl_handle != ctx->texture_current) + _cogl_texture_flush_vertices (); + ctx->texture_target = tex->gl_target; + ctx->texture_current = gl_handle; + /* Don't include the waste in the texture coordinates */ x_span = &g_array_index (tex->slice_x_spans, CoglTexSliceSpan, 0); y_span = &g_array_index (tex->slice_y_spans, CoglTexSliceSpan, 0); @@ -2290,22 +2324,80 @@ _cogl_texture_quad_hw (CoglTexture *tex, ty1 = ty1 * (y_span->size - y_span->waste) / y_span->size; ty2 = ty2 * (y_span->size - y_span->waste) / y_span->size; -#define CFX_F(x) COGL_FIXED_TO_FLOAT(x) + _cogl_texture_add_quad_vertices (COGL_FIXED_TO_FLOAT (x1), + COGL_FIXED_TO_FLOAT (y1), + COGL_FIXED_TO_FLOAT (x2), + COGL_FIXED_TO_FLOAT (y2), + COGL_FIXED_TO_FLOAT (tx1), + COGL_FIXED_TO_FLOAT (ty1), + COGL_FIXED_TO_FLOAT (tx2), + COGL_FIXED_TO_FLOAT (ty2)); +} + +void +cogl_texture_multiple_rectangles (CoglHandle handle, + const CoglFixed *verts, + guint n_rects) +{ + CoglTexture *tex; + gulong enable_flags = (COGL_ENABLE_VERTEX_ARRAY + | COGL_ENABLE_TEXCOORD_ARRAY + | COGL_ENABLE_TEXTURE_2D); + + _COGL_GET_CONTEXT (ctx, NO_RETVAL); + + /* Check if valid texture */ + if (!cogl_is_texture (handle)) + return; - /* Draw textured quad */ - tex_coords[0] = CFX_F(tx1); tex_coords[1] = CFX_F(ty2); - tex_coords[2] = CFX_F(tx2); tex_coords[3] = CFX_F(ty2); - tex_coords[4] = CFX_F(tx1); tex_coords[5] = CFX_F(ty1); - tex_coords[6] = CFX_F(tx2); tex_coords[7] = CFX_F(ty1); + cogl_clip_ensure (); - quad_coords[0] = CFX_F(x1); quad_coords[1] = CFX_F(y2); - quad_coords[2] = CFX_F(x2); quad_coords[3] = CFX_F(y2); - quad_coords[4] = CFX_F(x1); quad_coords[5] = CFX_F(y1); - quad_coords[6] = CFX_F(x2); quad_coords[7] = CFX_F(y1); + tex = _cogl_texture_pointer_from_handle (handle); + + /* Make sure we got stuff to draw */ + if (tex->slice_gl_handles == NULL) + return; + + if (tex->slice_gl_handles->len == 0) + return; - GE (glDrawArrays (GL_TRIANGLE_STRIP, 0, 4) ); + /* Prepare GL state */ + if (ctx->color_alpha < 255 + || tex->bitmap.format & COGL_A_BIT) + enable_flags |= COGL_ENABLE_BLEND; -#undef CFX_F + if (ctx->enable_backface_culling) + enable_flags |= COGL_ENABLE_BACKFACE_CULLING; + + cogl_enable (enable_flags); + + g_array_set_size (ctx->texture_vertices, 0); + + while (n_rects-- > 0) + { + if (verts[4] != verts[6] && verts[5] != verts[7]) + { + /* If there is only one GL texture and either the texture is + NPOT (no waste) or all of the coordinates are in the + range [0,1] then we can use hardware tiling */ + if (tex->slice_gl_handles->len == 1 + && ((cogl_features_available (COGL_FEATURE_TEXTURE_NPOT) + && tex->gl_target == GL_TEXTURE_2D) + || (verts[4] >= 0 && verts[4] <= COGL_FIXED_1 + && verts[6] >= 0 && verts[6] <= COGL_FIXED_1 + && verts[5] >= 0 && verts[5] <= COGL_FIXED_1 + && verts[7] >= 0 && verts[7] <= COGL_FIXED_1))) + _cogl_texture_quad_hw (tex, verts[0],verts[1], verts[2],verts[3], + verts[4],verts[5], verts[6],verts[7]); + else + _cogl_texture_quad_sw (tex, verts[0],verts[1], verts[2],verts[3], + verts[4],verts[5], verts[6],verts[7]); + } + + verts += 8; + } + + _cogl_texture_flush_vertices (); } void @@ -2319,47 +2411,18 @@ cogl_texture_rectangle (CoglHandle handle, CoglFixed tx2, CoglFixed ty2) { - CoglTexture *tex; - - /* Check if valid texture */ - if (!cogl_is_texture (handle)) - return; + CoglFixed verts[8]; - cogl_clip_ensure (); - - tex = _cogl_texture_pointer_from_handle (handle); - - /* Make sure we got stuff to draw */ - if (tex->slice_gl_handles == NULL) - return; - - if (tex->slice_gl_handles->len == 0) - return; - - if (tx1 == tx2 || ty1 == ty2) - return; - - /* Pick tiling mode according to hw support */ - if (cogl_features_available (COGL_FEATURE_TEXTURE_NPOT) - && tex->slice_gl_handles->len == 1) - { - _cogl_texture_quad_hw (tex, x1,y1, x2,y2, tx1,ty1, tx2,ty2); - } - else - { - if (tex->slice_gl_handles->len == 1 - && tx1 >= -COGL_FIXED_1 - && tx2 <= COGL_FIXED_1 - && ty1 >= -COGL_FIXED_1 - && ty2 <= COGL_FIXED_1) - { - _cogl_texture_quad_hw (tex, x1,y1, x2,y2, tx1,ty1, tx2,ty2); - } - else - { - _cogl_texture_quad_sw (tex, x1,y1, x2,y2, tx1,ty1, tx2,ty2); - } - } + verts[0] = x1; + verts[1] = y1; + verts[2] = x2; + verts[3] = y2; + verts[4] = tx1; + verts[5] = ty1; + verts[6] = tx2; + verts[7] = ty2; + + cogl_texture_multiple_rectangles (handle, verts, 1); } void @@ -2405,23 +2468,9 @@ cogl_texture_polygon (CoglHandle handle, /* Make sure there is enough space in the global texture vertex array. This is used so we can render the polygon with a single call to OpenGL but still support any number of vertices */ - if (ctx->texture_vertices_size < n_vertices) - { - guint nsize = ctx->texture_vertices_size; - - if (nsize == 0) - nsize = 1; - do - nsize *= 2; - while (nsize < n_vertices); - - ctx->texture_vertices_size = nsize; + g_array_set_size (ctx->texture_vertices, n_vertices); + p = (CoglTextureGLVertex *) ctx->texture_vertices->data; - ctx->texture_vertices = g_realloc (ctx->texture_vertices, - nsize - * sizeof (CoglTextureGLVertex)); - } - /* Prepare GL state */ enable_flags = (COGL_ENABLE_TEXTURE_2D | COGL_ENABLE_VERTEX_ARRAY @@ -2447,14 +2496,12 @@ cogl_texture_polygon (CoglHandle handle, if (use_color) { enable_flags |= COGL_ENABLE_COLOR_ARRAY; - GE( glColorPointer (4, GL_UNSIGNED_BYTE, sizeof (CoglTextureGLVertex), - ctx->texture_vertices[0].c) ); - } + GE( glColorPointer (4, GL_UNSIGNED_BYTE, + sizeof (CoglTextureGLVertex), p->c) ); + } - GE( glVertexPointer (3, GL_FLOAT, sizeof (CoglTextureGLVertex), - ctx->texture_vertices[0].v) ); - GE( glTexCoordPointer (2, GL_FLOAT, sizeof (CoglTextureGLVertex), - ctx->texture_vertices[0].t) ); + GE( glVertexPointer (3, GL_FLOAT, sizeof (CoglTextureGLVertex), p->v ) ); + GE( glTexCoordPointer (2, GL_FLOAT, sizeof (CoglTextureGLVertex), p->t ) ); cogl_enable (enable_flags); @@ -2464,7 +2511,7 @@ cogl_texture_polygon (CoglHandle handle, /* Convert the vertices into an array of GLfloats ready to pass to OpenGL */ - for (i = 0, p = ctx->texture_vertices; i < n_vertices; i++, p++) + for (i = 0; i < n_vertices; i++, p++) { #define CFX_F COGL_FIXED_TO_FLOAT