#include <string.h>
#include <assert.h>
+#include <GL/glew.h>
+#include "effect_util.h"
#include "flat_input.h"
+#include "resource_pool.h"
#include "util.h"
-#include "opengl.h"
+
+using namespace std;
FlatInput::FlatInput(ImageFormat image_format, MovitPixelFormat pixel_format, GLenum type, unsigned width, unsigned height)
: image_format(image_format),
pixel_format(pixel_format),
type(type),
- needs_update(false),
+ pbo(0),
+ texture_num(0),
finalized(false),
output_linear_gamma(false),
needs_mipmaps(false),
width(width),
height(height),
- pitch(width)
+ pitch(width),
+ pixel_data(NULL)
{
assert(type == GL_FLOAT || type == GL_UNSIGNED_BYTE);
register_int("output_linear_gamma", &output_linear_gamma);
register_int("needs_mipmaps", &needs_mipmaps);
}
+FlatInput::~FlatInput()
+{
+ if (texture_num != 0) {
+ resource_pool->release_2d_texture(texture_num);
+ }
+}
+
void FlatInput::finalize()
{
// Translate the input format to OpenGL's enums.
- GLenum internal_format;
if (type == GL_FLOAT) {
- internal_format = GL_RGBA16F_ARB;
+ internal_format = GL_RGBA32F_ARB;
} else if (output_linear_gamma) {
assert(type == GL_UNSIGNED_BYTE);
- internal_format = GL_SRGB8;
+ internal_format = GL_SRGB8_ALPHA8;
} else {
assert(type == GL_UNSIGNED_BYTE);
internal_format = GL_RGBA8;
}
if (pixel_format == FORMAT_RGB) {
format = GL_RGB;
- bytes_per_pixel = 3;
- } else if (pixel_format == FORMAT_RGBA) {
+ } else if (pixel_format == FORMAT_RGBA_PREMULTIPLIED_ALPHA ||
+ pixel_format == FORMAT_RGBA_POSTMULTIPLIED_ALPHA) {
format = GL_RGBA;
- bytes_per_pixel = 4;
} else if (pixel_format == FORMAT_BGR) {
format = GL_BGR;
- bytes_per_pixel = 3;
- } else if (pixel_format == FORMAT_BGRA) {
+ } else if (pixel_format == FORMAT_BGRA_PREMULTIPLIED_ALPHA ||
+ pixel_format == FORMAT_BGRA_POSTMULTIPLIED_ALPHA) {
format = GL_BGRA;
- bytes_per_pixel = 4;
} else if (pixel_format == FORMAT_GRAYSCALE) {
format = GL_LUMINANCE;
- bytes_per_pixel = 1;
} else {
assert(false);
}
- if (type == GL_FLOAT) {
- bytes_per_pixel *= sizeof(float);
- }
- // Create PBO to hold the texture holding the input image, and then the texture itself.
- glGenBuffers(1, &pbo);
- check_error();
- glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
- check_error();
- glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, pitch * height * bytes_per_pixel, NULL, GL_STREAM_DRAW);
- check_error();
- glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
- check_error();
-
- glGenTextures(1, &texture_num);
- check_error();
- glBindTexture(GL_TEXTURE_2D, texture_num);
- check_error();
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, needs_mipmaps ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR);
- check_error();
- glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch);
- check_error();
- // Intel/Mesa seems to have a broken glGenerateMipmap() for non-FBO textures, so do it here
- // instead of calling glGenerateMipmap().
- glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, needs_mipmaps ? GL_TRUE : GL_FALSE);
- check_error();
- glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0, format, type, NULL);
- check_error();
- glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
- check_error();
-
- needs_update = true;
finalized = true;
}
-void FlatInput::set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num)
+void FlatInput::set_gl_state(GLuint glsl_program_num, const string& prefix, unsigned *sampler_num)
{
glActiveTexture(GL_TEXTURE0 + *sampler_num);
check_error();
- glBindTexture(GL_TEXTURE_2D, texture_num);
- check_error();
- if (needs_update) {
- // Copy the pixel data into the PBO.
+ if (texture_num == 0) {
+ // (Re-)upload the texture.
+ texture_num = resource_pool->create_2d_texture(internal_format, width, height);
+ glBindTexture(GL_TEXTURE_2D, texture_num);
+ check_error();
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
check_error();
- void *mapped_pbo = glMapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, GL_WRITE_ONLY);
- memcpy(mapped_pbo, pixel_data, pitch * height * bytes_per_pixel);
- glUnmapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, needs_mipmaps ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR);
+ check_error();
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
check_error();
-
- // Re-upload the texture from the PBO.
glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch);
check_error();
- glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, GL_FLOAT, BUFFER_OFFSET(0));
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, type, pixel_data);
+ check_error();
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
check_error();
+ if (needs_mipmaps) {
+ glGenerateMipmap(GL_TEXTURE_2D);
+ check_error();
+ }
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
check_error();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
check_error();
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
check_error();
-
- needs_update = false;
+ } else {
+ glBindTexture(GL_TEXTURE_2D, texture_num);
+ check_error();
}
// Bind it to a sampler.
++*sampler_num;
}
-std::string FlatInput::output_fragment_shader()
+string FlatInput::output_fragment_shader()
{
return read_file("flat_input.frag");
}
+
+void FlatInput::invalidate_pixel_data()
+{
+ if (texture_num != 0) {
+ resource_pool->release_2d_texture(texture_num);
+ texture_num = 0;
+ }
+}
projects / movit / blobdiff