Add support to the ResourcePool for 2D textures.

[movit] / resource_pool.cpp

diff --git a/resource_pool.cpp b/resource_pool.cpp
index e65d0a94c74e2832b541d7953c62e14b62eb1098..bfd53061f2309a41285bcc81252e88418b6dd209 100644 (file)
--- a/resource_pool.cpp
+++ b/resource_pool.cpp
@@ -127,3 +127,43 @@ void ResourcePool::release_glsl_program(GLuint glsl_program_num)
 
        pthread_mutex_unlock(&lock);
 }
+
+GLuint ResourcePool::create_2d_texture(GLint internal_format, GLsizei width, GLsizei height)
+{
+       // Find any reasonable format given the internal format; OpenGL validates it
+       // even though we give NULL as pointer.
+       GLenum format;
+       switch (internal_format) {
+       case GL_RGBA32F_ARB:
+       case GL_RGBA16F_ARB:
+       case GL_RGBA8:
+       case GL_SRGB8_ALPHA8:
+               format = GL_RGBA;
+               break;
+       case GL_RG32F:
+       case GL_RG16F:
+               format = GL_RG;
+               break;
+       default:
+               // TODO: Add more here as needed.
+               assert(false);
+       }
+
+       GLuint texture_num;
+       glGenTextures(1, &texture_num);
+       check_error();
+       glBindTexture(GL_TEXTURE_2D, texture_num);
+       check_error();
+       glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0, format, GL_UNSIGNED_BYTE, NULL);
+       check_error();
+       glBindTexture(GL_TEXTURE_2D, 0);
+       check_error();
+
+       return texture_num;
+}
+
+void ResourcePool::release_2d_texture(GLuint texture_num)
+{
+       glDeleteTextures(1, &texture_num);
+       check_error();
+}