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This commit is contained in:
Hartmut Seichter 2023-07-01 10:20:24 +02:00
parent 0eebe25ea9
commit b6691561e8
7 changed files with 58 additions and 51 deletions
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9
src/lib/include/paradiso/rgba.hpp
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@ -38,8 +38,8 @@ struct RGBA final {
static constexpr RGBA from_rgba(uint8_t red, uint8_t green, uint8_t blue,
uint8_t alpha) noexcept {
return {.pixel =
(value_type)(((((red << 8) | green) << 8) | blue) << 8) |
alpha};
(value_type)(((((alpha << 8) | blue) << 8) | green) << 8) |
red};
}
constexpr void to_float(float rgba_f[4]) const noexcept {
@ -58,7 +58,10 @@ struct RGBA final {
constexpr uint8_t blue() const noexcept {
return uint8_t((pixel & 0xFF00) >> 8);
}
constexpr uint8_t alpha() const noexcept { return uint8_t(pixel & 0xFF); }
constexpr uint8_t alpha() const noexcept {
return uint8_t(pixel & 0xFF);
}
constexpr RGBA& set_red(uint8_t v) noexcept {
pixel = (pixel & 0x00FFFFFF) | (v << 24);

17
src/lib/include/paradiso/sprite.hpp
View file

@ -30,6 +30,13 @@
namespace paradiso {
// 0 3 | y
// +------+ | ^
// | \ | | -- + - > x
// | \ | | / |
// +------+ | z
// 1 2 |
struct Sprite final {
using ChangeCountType = std::uint64_t;
@ -39,7 +46,7 @@ struct Sprite final {
Vector2<float> pivot{Vector2<float>::zero()};
std::array<std::uint32_t, 6> indices{0, 3, 2, 2, 1, 0};
std::array<std::uint32_t, 6> indices{0, 2, 1, 0, 3, 2};
std::array<Vector3<float>, 4> vertices{
Vector3<float>::make(-1.0f, -1.0f, 0.0f),
@ -52,10 +59,10 @@ struct Sprite final {
Vector3<float>::z_axis(), Vector3<float>::z_axis()};
std::array<Vector2<float>, 4> texture_coordinates{
Vector2<float>::make(0.0f, 0.0f), /// 0
Vector2<float>::make(0.0f, 1.0f), /// 1
Vector2<float>::make(1.0f, 1.0f), /// 2
Vector2<float>::make(1.0f, 0.0f) /// 3
Vector2<float>::make(0.0f, 0.0f),
Vector2<float>::make(1.0f, 0.0f),
Vector2<float>::make(1.0f, 1.0f),
Vector2<float>::make(0.0f, 1.0f)
};
ChangeCountType change_count{};

33
src/lib/src/renderer.cpp
View file

@ -22,8 +22,8 @@
*/
#include "paradiso/renderer.hpp"
#include "paradiso/bitmap.hpp"
#include "paradiso/sprite.hpp"
#include "paradiso/shader.hpp"
#include "paradiso/sprite.hpp"
#include "glad/glad.h"
@ -53,7 +53,6 @@ struct Renderer::impl {
GL_TRUE == glIsVertexArray(vertex_array_obj);
}
bool build(const Sprite& sprite) {
// reset if the Renderer already in use
if (ready())
@ -114,7 +113,6 @@ struct Renderer::impl {
return ready();
}
void texture_bind() {
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture_id);
@ -124,6 +122,9 @@ struct Renderer::impl {
void texture_update(const Bitmap& image) {
if (GL_FALSE == glIsTexture(texture_id)) {
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glGenTextures(1, &texture_id);
glActiveTexture(GL_TEXTURE0 + 0);
@ -139,21 +140,19 @@ struct Renderer::impl {
// setup new texture
glTexImage2D(GL_TEXTURE_2D, // target
0, // level
GL_RGB, // internal format
GL_RGBA, // internal format
image.size.width, // width
image.size.height, // height
0, // border
GL_RGBA, // format
GL_BGRA, // format
GL_UNSIGNED_BYTE, // type
image.data.data() // pointer to data
);
#if 0
// generate MipMaps
glGenerateMipmap(GL_TEXTURE_2D);
glGenerateTextureMipmap(texture_id);
// generate MipMaps
glGenerateMipmap(GL_TEXTURE_2D);
glGenerateTextureMipmap(_textureId);
#endif
} else {
glActiveTexture(GL_TEXTURE0);
@ -167,18 +166,15 @@ struct Renderer::impl {
0, // y-offset
image.size.width, // width
image.size.height, // height
GL_RGBA, // format
GL_BGRA, // format
GL_UNSIGNED_BYTE, // type
image.data.data()); // pointer
}
// glBindTexture(GL_TEXTURE_2D, 0);
glBindTexture(GL_TEXTURE_2D, 0);
}
void texture_release()
{
glDeleteTextures(1, &texture_id);
}
void texture_release() { glDeleteTextures(1, &texture_id); }
void release() {
@ -189,7 +185,6 @@ struct Renderer::impl {
glDeleteVertexArrays(1, &vertex_array_obj);
texture_release();
}
void just_draw(const Sprite& sprite) {
@ -237,9 +232,9 @@ bool Renderer::draw(const Sprite& sprite, const Shader& shader) {
impl_->just_draw(sprite);
//Renderer::impl::fetch_errors(__PRETTY_FUNCTION__);
// Renderer::impl::fetch_errors(__PRETTY_FUNCTION__);
// impl_->texture_unbind();
impl_->texture_unbind(); // overkill but some cards are finicky
return true;
}