diff options
Diffstat (limited to 'intern/cycles/blender/blender_gpu_display.cpp')
| -rw-r--r-- | intern/cycles/blender/blender_gpu_display.cpp | 787 |
1 files changed, 787 insertions, 0 deletions
diff --git a/intern/cycles/blender/blender_gpu_display.cpp b/intern/cycles/blender/blender_gpu_display.cpp new file mode 100644 index 00000000000..c5c3a2bd155 --- /dev/null +++ b/intern/cycles/blender/blender_gpu_display.cpp @@ -0,0 +1,787 @@ +/* + * Copyright 2021 Blender Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "blender/blender_gpu_display.h" + +#include "device/device.h" +#include "util/util_logging.h" +#include "util/util_opengl.h" + +extern "C" { +struct RenderEngine; + +bool RE_engine_has_render_context(struct RenderEngine *engine); +void RE_engine_render_context_enable(struct RenderEngine *engine); +void RE_engine_render_context_disable(struct RenderEngine *engine); + +bool DRW_opengl_context_release(); +void DRW_opengl_context_activate(bool drw_state); + +void *WM_opengl_context_create(); +void WM_opengl_context_activate(void *gl_context); +void WM_opengl_context_dispose(void *gl_context); +void WM_opengl_context_release(void *context); +} + +CCL_NAMESPACE_BEGIN + +/* -------------------------------------------------------------------- + * BlenderDisplayShader. + */ + +unique_ptr<BlenderDisplayShader> BlenderDisplayShader::create(BL::RenderEngine &b_engine, + BL::Scene &b_scene) +{ + if (b_engine.support_display_space_shader(b_scene)) { + return make_unique<BlenderDisplaySpaceShader>(b_engine, b_scene); + } + + return make_unique<BlenderFallbackDisplayShader>(); +} + +int BlenderDisplayShader::get_position_attrib_location() +{ + if (position_attribute_location_ == -1) { + const uint shader_program = get_shader_program(); + position_attribute_location_ = glGetAttribLocation(shader_program, position_attribute_name); + } + return position_attribute_location_; +} + +int BlenderDisplayShader::get_tex_coord_attrib_location() +{ + if (tex_coord_attribute_location_ == -1) { + const uint shader_program = get_shader_program(); + tex_coord_attribute_location_ = glGetAttribLocation(shader_program, tex_coord_attribute_name); + } + return tex_coord_attribute_location_; +} + +/* -------------------------------------------------------------------- + * BlenderFallbackDisplayShader. + */ + +/* TODO move shaders to standalone .glsl file. */ +static const char *FALLBACK_VERTEX_SHADER = + "#version 330\n" + "uniform vec2 fullscreen;\n" + "in vec2 texCoord;\n" + "in vec2 pos;\n" + "out vec2 texCoord_interp;\n" + "\n" + "vec2 normalize_coordinates()\n" + "{\n" + " return (vec2(2.0) * (pos / fullscreen)) - vec2(1.0);\n" + "}\n" + "\n" + "void main()\n" + "{\n" + " gl_Position = vec4(normalize_coordinates(), 0.0, 1.0);\n" + " texCoord_interp = texCoord;\n" + "}\n\0"; + +static const char *FALLBACK_FRAGMENT_SHADER = + "#version 330\n" + "uniform sampler2D image_texture;\n" + "in vec2 texCoord_interp;\n" + "out vec4 fragColor;\n" + "\n" + "void main()\n" + "{\n" + " fragColor = texture(image_texture, texCoord_interp);\n" + "}\n\0"; + +static void shader_print_errors(const char *task, const char *log, const char *code) +{ + LOG(ERROR) << "Shader: " << task << " error:"; + LOG(ERROR) << "===== shader string ===="; + + stringstream stream(code); + string partial; + + int line = 1; + while (getline(stream, partial, '\n')) { + if (line < 10) { + LOG(ERROR) << " " << line << " " << partial; + } + else { + LOG(ERROR) << line << " " << partial; + } + line++; + } + LOG(ERROR) << log; +} + +static int compile_fallback_shader(void) +{ + const struct Shader { + const char *source; + const GLenum type; + } shaders[2] = {{FALLBACK_VERTEX_SHADER, GL_VERTEX_SHADER}, + {FALLBACK_FRAGMENT_SHADER, GL_FRAGMENT_SHADER}}; + + const GLuint program = glCreateProgram(); + + for (int i = 0; i < 2; i++) { + const GLuint shader = glCreateShader(shaders[i].type); + + string source_str = shaders[i].source; + const char *c_str = source_str.c_str(); + + glShaderSource(shader, 1, &c_str, NULL); + glCompileShader(shader); + + GLint compile_status; + glGetShaderiv(shader, GL_COMPILE_STATUS, &compile_status); + + if (!compile_status) { + GLchar log[5000]; + GLsizei length = 0; + glGetShaderInfoLog(shader, sizeof(log), &length, log); + shader_print_errors("compile", log, c_str); + return 0; + } + + glAttachShader(program, shader); + } + + /* Link output. */ + glBindFragDataLocation(program, 0, "fragColor"); + + /* Link and error check. */ + glLinkProgram(program); + + /* TODO(sergey): Find a way to nicely de-duplicate the error checking. */ + GLint link_status; + glGetProgramiv(program, GL_LINK_STATUS, &link_status); + if (!link_status) { + GLchar log[5000]; + GLsizei length = 0; + /* TODO(sergey): Is it really program passed to glGetShaderInfoLog? */ + glGetShaderInfoLog(program, sizeof(log), &length, log); + shader_print_errors("linking", log, FALLBACK_VERTEX_SHADER); + shader_print_errors("linking", log, FALLBACK_FRAGMENT_SHADER); + return 0; + } + + return program; +} + +void BlenderFallbackDisplayShader::bind(int width, int height) +{ + create_shader_if_needed(); + + if (!shader_program_) { + return; + } + + glUseProgram(shader_program_); + glUniform1i(image_texture_location_, 0); + glUniform2f(fullscreen_location_, width, height); +} + +void BlenderFallbackDisplayShader::unbind() +{ +} + +uint BlenderFallbackDisplayShader::get_shader_program() +{ + return shader_program_; +} + +void BlenderFallbackDisplayShader::create_shader_if_needed() +{ + if (shader_program_ || shader_compile_attempted_) { + return; + } + + shader_compile_attempted_ = true; + + shader_program_ = compile_fallback_shader(); + if (!shader_program_) { + return; + } + + glUseProgram(shader_program_); + + image_texture_location_ = glGetUniformLocation(shader_program_, "image_texture"); + if (image_texture_location_ < 0) { + LOG(ERROR) << "Shader doesn't contain the 'image_texture' uniform."; + destroy_shader(); + return; + } + + fullscreen_location_ = glGetUniformLocation(shader_program_, "fullscreen"); + if (fullscreen_location_ < 0) { + LOG(ERROR) << "Shader doesn't contain the 'fullscreen' uniform."; + destroy_shader(); + return; + } +} + +void BlenderFallbackDisplayShader::destroy_shader() +{ + glDeleteProgram(shader_program_); + shader_program_ = 0; +} + +/* -------------------------------------------------------------------- + * BlenderDisplaySpaceShader. + */ + +BlenderDisplaySpaceShader::BlenderDisplaySpaceShader(BL::RenderEngine &b_engine, + BL::Scene &b_scene) + : b_engine_(b_engine), b_scene_(b_scene) +{ + DCHECK(b_engine_.support_display_space_shader(b_scene_)); +} + +void BlenderDisplaySpaceShader::bind(int /*width*/, int /*height*/) +{ + b_engine_.bind_display_space_shader(b_scene_); +} + +void BlenderDisplaySpaceShader::unbind() +{ + b_engine_.unbind_display_space_shader(); +} + +uint BlenderDisplaySpaceShader::get_shader_program() +{ + if (!shader_program_) { + glGetIntegerv(GL_CURRENT_PROGRAM, reinterpret_cast<int *>(&shader_program_)); + } + + if (!shader_program_) { + LOG(ERROR) << "Error retrieving shader program for display space shader."; + } + + return shader_program_; +} + +/* -------------------------------------------------------------------- + * BlenderGPUDisplay. + */ + +BlenderGPUDisplay::BlenderGPUDisplay(BL::RenderEngine &b_engine, BL::Scene &b_scene) + : b_engine_(b_engine), display_shader_(BlenderDisplayShader::create(b_engine, b_scene)) +{ + /* Create context while on the main thread. */ + gl_context_create(); +} + +BlenderGPUDisplay::~BlenderGPUDisplay() +{ + gl_resources_destroy(); +} + +/* -------------------------------------------------------------------- + * Update procedure. + */ + +bool BlenderGPUDisplay::do_update_begin(const GPUDisplayParams ¶ms, + int texture_width, + int texture_height) +{ + /* Note that it's the responsibility of BlenderGPUDisplay to ensure updating and drawing + * the texture does not happen at the same time. This is achieved indirectly. + * + * When enabling the OpenGL context, it uses an internal mutex lock DST.gl_context_lock. + * This same lock is also held when do_draw() is called, which together ensure mutual + * exclusion. + * + * This locking is not performed at the GPU display level, because that would cause lock + * inversion. */ + if (!gl_context_enable()) { + return false; + } + + if (gl_render_sync_) { + glWaitSync((GLsync)gl_render_sync_, 0, GL_TIMEOUT_IGNORED); + } + + if (!gl_texture_resources_ensure()) { + gl_context_disable(); + return false; + } + + /* Update texture dimensions if needed. */ + if (texture_.width != texture_width || texture_.height != texture_height) { + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, texture_.gl_id); + glTexImage2D( + GL_TEXTURE_2D, 0, GL_RGBA16F, texture_width, texture_height, 0, GL_RGBA, GL_HALF_FLOAT, 0); + texture_.width = texture_width; + texture_.height = texture_height; + glBindTexture(GL_TEXTURE_2D, 0); + + /* Texture did change, and no pixel storage was provided. Tag for an explicit zeroing out to + * avoid undefined content. */ + texture_.need_clear = true; + } + + /* Update PBO dimensions if needed. + * + * NOTE: Allocate the PBO for the the size which will fit the final render resolution (as in, + * at a resolution divider 1. This was we don't need to recreate graphics interoperability + * objects which are costly and which are tied to the specific underlying buffer size. + * The downside of this approach is that when graphics interoperability is not used we are + * sending too much data to GPU when resolution divider is not 1. */ + /* TODO(sergey): Investigate whether keeping the PBO exact size of the texture makes non-interop + * mode faster. */ + const int buffer_width = params.full_size.x; + const int buffer_height = params.full_size.y; + if (texture_.buffer_width != buffer_width || texture_.buffer_height != buffer_height) { + const size_t size_in_bytes = sizeof(half4) * buffer_width * buffer_height; + glBindBuffer(GL_PIXEL_UNPACK_BUFFER, texture_.gl_pbo_id); + glBufferData(GL_PIXEL_UNPACK_BUFFER, size_in_bytes, 0, GL_DYNAMIC_DRAW); + glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0); + + texture_.buffer_width = buffer_width; + texture_.buffer_height = buffer_height; + } + + /* New content will be provided to the texture in one way or another, so mark this in a + * centralized place. */ + texture_.need_update = true; + + return true; +} + +void BlenderGPUDisplay::do_update_end() +{ + gl_upload_sync_ = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0); + glFlush(); + + gl_context_disable(); +} + +/* -------------------------------------------------------------------- + * Texture update from CPU buffer. + */ + +void BlenderGPUDisplay::do_copy_pixels_to_texture( + const half4 *rgba_pixels, int texture_x, int texture_y, int pixels_width, int pixels_height) +{ + /* This call copies pixels to a Pixel Buffer Object (PBO) which is much cheaper from CPU time + * point of view than to copy data directly to the OpenGL texture. + * + * The possible downside of this approach is that it might require a higher peak memory when + * doing partial updates of the texture (although, in practice even partial updates might peak + * with a full-frame buffer stored on the CPU if the GPU is currently occupied). */ + + half4 *mapped_rgba_pixels = map_texture_buffer(); + if (!mapped_rgba_pixels) { + return; + } + + if (texture_x == 0 && texture_y == 0 && pixels_width == texture_.width && + pixels_height == texture_.height) { + const size_t size_in_bytes = sizeof(half4) * texture_.width * texture_.height; + memcpy(mapped_rgba_pixels, rgba_pixels, size_in_bytes); + } + else { + const half4 *rgba_row = rgba_pixels; + half4 *mapped_rgba_row = mapped_rgba_pixels + texture_y * texture_.width + texture_x; + for (int y = 0; y < pixels_height; + ++y, rgba_row += pixels_width, mapped_rgba_row += texture_.width) { + memcpy(mapped_rgba_row, rgba_row, sizeof(half4) * pixels_width); + } + } + + unmap_texture_buffer(); +} + +/* -------------------------------------------------------------------- + * Texture buffer mapping. + */ + +half4 *BlenderGPUDisplay::do_map_texture_buffer() +{ + glBindBuffer(GL_PIXEL_UNPACK_BUFFER, texture_.gl_pbo_id); + + half4 *mapped_rgba_pixels = reinterpret_cast<half4 *>( + glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY)); + if (!mapped_rgba_pixels) { + LOG(ERROR) << "Error mapping BlenderGPUDisplay pixel buffer object."; + } + + if (texture_.need_clear) { + const int64_t texture_width = texture_.width; + const int64_t texture_height = texture_.height; + memset(reinterpret_cast<void *>(mapped_rgba_pixels), + 0, + texture_width * texture_height * sizeof(half4)); + texture_.need_clear = false; + } + + return mapped_rgba_pixels; +} + +void BlenderGPUDisplay::do_unmap_texture_buffer() +{ + glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER); + + glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0); +} + +/* -------------------------------------------------------------------- + * Graphics interoperability. + */ + +DeviceGraphicsInteropDestination BlenderGPUDisplay::do_graphics_interop_get() +{ + DeviceGraphicsInteropDestination interop_dst; + + interop_dst.buffer_width = texture_.buffer_width; + interop_dst.buffer_height = texture_.buffer_height; + interop_dst.opengl_pbo_id = texture_.gl_pbo_id; + + interop_dst.need_clear = texture_.need_clear; + texture_.need_clear = false; + + return interop_dst; +} + +void BlenderGPUDisplay::graphics_interop_activate() +{ + gl_context_enable(); +} + +void BlenderGPUDisplay::graphics_interop_deactivate() +{ + gl_context_disable(); +} + +/* -------------------------------------------------------------------- + * Drawing. + */ + +void BlenderGPUDisplay::clear() +{ + texture_.need_clear = true; +} + +void BlenderGPUDisplay::set_zoom(float zoom_x, float zoom_y) +{ + zoom_ = make_float2(zoom_x, zoom_y); +} + +void BlenderGPUDisplay::do_draw(const GPUDisplayParams ¶ms) +{ + /* See do_update_begin() for why no locking is required here. */ + const bool transparent = true; // TODO(sergey): Derive this from Film. + + if (texture_.need_clear) { + /* Texture is requested to be cleared and was not yet cleared. + * Do early return which should be equivalent of drawing all-zero texture. */ + return; + } + + if (!gl_draw_resources_ensure()) { + return; + } + + if (use_gl_context_) { + gl_context_mutex_.lock(); + } + + if (gl_upload_sync_) { + glWaitSync((GLsync)gl_upload_sync_, 0, GL_TIMEOUT_IGNORED); + } + + if (transparent) { + glEnable(GL_BLEND); + glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); + } + + display_shader_->bind(params.full_size.x, params.full_size.y); + + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, texture_.gl_id); + + /* Trick to keep sharp rendering without jagged edges on all GPUs. + * + * The idea here is to enforce driver to use linear interpolation when the image is not zoomed + * in. + * For the render result with a resolution divider in effect we always use nearest interpolation. + * + * Use explicit MIN assignment to make sure the driver does not have an undefined behavior at + * the zoom level 1. The MAG filter is always NEAREST. */ + const float zoomed_width = params.size.x * zoom_.x; + const float zoomed_height = params.size.y * zoom_.y; + if (texture_.width != params.size.x || texture_.height != params.size.y) { + /* Resolution divider is different from 1, force enarest interpolation. */ + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + } + else if (zoomed_width - params.size.x > 0.5f || zoomed_height - params.size.y > 0.5f) { + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + } + else { + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + } + + glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer_); + + texture_update_if_needed(); + vertex_buffer_update(params); + + /* TODO(sergey): Does it make sense/possible to cache/reuse the VAO? */ + GLuint vertex_array_object; + glGenVertexArrays(1, &vertex_array_object); + glBindVertexArray(vertex_array_object); + + const int texcoord_attribute = display_shader_->get_tex_coord_attrib_location(); + const int position_attribute = display_shader_->get_position_attrib_location(); + + glEnableVertexAttribArray(texcoord_attribute); + glEnableVertexAttribArray(position_attribute); + + glVertexAttribPointer( + texcoord_attribute, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (const GLvoid *)0); + glVertexAttribPointer(position_attribute, + 2, + GL_FLOAT, + GL_FALSE, + 4 * sizeof(float), + (const GLvoid *)(sizeof(float) * 2)); + + glDrawArrays(GL_TRIANGLE_FAN, 0, 4); + + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindTexture(GL_TEXTURE_2D, 0); + + glDeleteVertexArrays(1, &vertex_array_object); + + display_shader_->unbind(); + + if (transparent) { + glDisable(GL_BLEND); + } + + gl_render_sync_ = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0); + glFlush(); + + if (use_gl_context_) { + gl_context_mutex_.unlock(); + } +} + +void BlenderGPUDisplay::gl_context_create() +{ + /* When rendering in viewport there is no render context available via engine. + * Check whether own context is to be created here. + * + * NOTE: If the `b_engine_`'s context is not available, we are expected to be on a main thread + * here. */ + use_gl_context_ = !RE_engine_has_render_context( + reinterpret_cast<RenderEngine *>(b_engine_.ptr.data)); + + if (use_gl_context_) { + const bool drw_state = DRW_opengl_context_release(); + gl_context_ = WM_opengl_context_create(); + if (gl_context_) { + /* On Windows an old context is restored after creation, and subsequent release of context + * generates a Win32 error. Harmless for users, but annoying to have possible misleading + * error prints in the console. */ +#ifndef _WIN32 + WM_opengl_context_release(gl_context_); +#endif + } + else { + LOG(ERROR) << "Error creating OpenGL context."; + } + + DRW_opengl_context_activate(drw_state); + } +} + +bool BlenderGPUDisplay::gl_context_enable() +{ + if (use_gl_context_) { + if (!gl_context_) { + return false; + } + gl_context_mutex_.lock(); + WM_opengl_context_activate(gl_context_); + return true; + } + + RE_engine_render_context_enable(reinterpret_cast<RenderEngine *>(b_engine_.ptr.data)); + return true; +} + +void BlenderGPUDisplay::gl_context_disable() +{ + if (use_gl_context_) { + if (gl_context_) { + WM_opengl_context_release(gl_context_); + gl_context_mutex_.unlock(); + } + return; + } + + RE_engine_render_context_disable(reinterpret_cast<RenderEngine *>(b_engine_.ptr.data)); +} + +void BlenderGPUDisplay::gl_context_dispose() +{ + if (gl_context_) { + const bool drw_state = DRW_opengl_context_release(); + + WM_opengl_context_activate(gl_context_); + WM_opengl_context_dispose(gl_context_); + + DRW_opengl_context_activate(drw_state); + } +} + +bool BlenderGPUDisplay::gl_draw_resources_ensure() +{ + if (!texture_.gl_id) { + /* If there is no texture allocated, there is nothing to draw. Inform the draw call that it can + * can not continue. Note that this is not an unrecoverable error, so once the texture is known + * we will come back here and create all the GPU resources needed for draw. */ + return false; + } + + if (gl_draw_resource_creation_attempted_) { + return gl_draw_resources_created_; + } + gl_draw_resource_creation_attempted_ = true; + + if (!vertex_buffer_) { + glGenBuffers(1, &vertex_buffer_); + if (!vertex_buffer_) { + LOG(ERROR) << "Error creating vertex buffer."; + return false; + } + } + + gl_draw_resources_created_ = true; + + return true; +} + +void BlenderGPUDisplay::gl_resources_destroy() +{ + gl_context_enable(); + + if (vertex_buffer_ != 0) { + glDeleteBuffers(1, &vertex_buffer_); + } + + if (texture_.gl_pbo_id) { + glDeleteBuffers(1, &texture_.gl_pbo_id); + texture_.gl_pbo_id = 0; + } + + if (texture_.gl_id) { + glDeleteTextures(1, &texture_.gl_id); + texture_.gl_id = 0; + } + + gl_context_disable(); + + gl_context_dispose(); +} + +bool BlenderGPUDisplay::gl_texture_resources_ensure() +{ + if (texture_.creation_attempted) { + return texture_.is_created; + } + texture_.creation_attempted = true; + + DCHECK(!texture_.gl_id); + DCHECK(!texture_.gl_pbo_id); + + /* Create texture. */ + glGenTextures(1, &texture_.gl_id); + if (!texture_.gl_id) { + LOG(ERROR) << "Error creating texture."; + return false; + } + + /* Configure the texture. */ + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, texture_.gl_id); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glBindTexture(GL_TEXTURE_2D, 0); + + /* Create PBO for the texture. */ + glGenBuffers(1, &texture_.gl_pbo_id); + if (!texture_.gl_pbo_id) { + LOG(ERROR) << "Error creating texture pixel buffer object."; + return false; + } + + /* Creation finished with a success. */ + texture_.is_created = true; + + return true; +} + +void BlenderGPUDisplay::texture_update_if_needed() +{ + if (!texture_.need_update) { + return; + } + + glBindBuffer(GL_PIXEL_UNPACK_BUFFER, texture_.gl_pbo_id); + glTexSubImage2D( + GL_TEXTURE_2D, 0, 0, 0, texture_.width, texture_.height, GL_RGBA, GL_HALF_FLOAT, 0); + glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0); + + texture_.need_update = false; +} + +void BlenderGPUDisplay::vertex_buffer_update(const GPUDisplayParams ¶ms) +{ + /* Invalidate old contents - avoids stalling if the buffer is still waiting in queue to be + * rendered. */ + glBufferData(GL_ARRAY_BUFFER, 16 * sizeof(float), NULL, GL_STREAM_DRAW); + + float *vpointer = reinterpret_cast<float *>(glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY)); + if (!vpointer) { + return; + } + + vpointer[0] = 0.0f; + vpointer[1] = 0.0f; + vpointer[2] = params.offset.x; + vpointer[3] = params.offset.y; + + vpointer[4] = 1.0f; + vpointer[5] = 0.0f; + vpointer[6] = (float)params.size.x + params.offset.x; + vpointer[7] = params.offset.y; + + vpointer[8] = 1.0f; + vpointer[9] = 1.0f; + vpointer[10] = (float)params.size.x + params.offset.x; + vpointer[11] = (float)params.size.y + params.offset.y; + + vpointer[12] = 0.0f; + vpointer[13] = 1.0f; + vpointer[14] = params.offset.x; + vpointer[15] = (float)params.size.y + params.offset.y; + + glUnmapBuffer(GL_ARRAY_BUFFER); +} + +CCL_NAMESPACE_END |